Airworthiness Directive Lookup Free FAA AD search by N-number, make or model
Find the FAA airworthiness directives that may apply to an aircraft: 12,857 ADs from the Federal Register since 1995, through Oct 1, 2026, each with its applicability text and the official document. Free, no account.
N8YM is a 1985 Beechjet 400 in the FAA registry (aircraft page). Matched on type certificate model 400.
RESULTS
24 ADs in effect may apply to N8YM
- In effect24
- Recurring3
- Superseded or removed3
Informational only. These are FAA airworthiness directives whose published applicability names this make and model. Whether an AD applies to a particular aircraft depends on its serial number, installed engines, propellers, parts and modifications, and some ADs listed here will not apply. This list is not the official AD record and not a compliance determination: confirm applicability and compliance against the FAA’s Dynamic Regulatory System and the aircraft’s records with a certificated mechanic or inspector. Covers ADs published in the Federal Register since 1995, through Oct 1, 2026; older ADs, and engine, propeller and appliance ADs that do not name the aircraft, are not included.
Also show 3 superseded or removed N8YM’s registration record
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Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Airplanes
Applicability, as the AD words it
This AD applies to the airplanes identified in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category. (1) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) airplanes identified in paragraphs (c)(1)(i), (c)(1)(ii), and (c)(1)(iii) of this AD. (i) Model 400 Beechjet airplanes having serial numbers RJ-1 through RJ-65, inclusive. (ii) Model 400A Beechjet airplanes having serial numbers RK-1 through RK-604, inclusive. (iii) Model 400T Beechjet airplanes having serial numbers TT-1 through TT-180, inclusive; and TX-1 through TX-13, inclusive. (2) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Mitsubishi Heavy Industries, Inc. Ltd.) Model MU-300 airplanes, having serial numbers A003SA through A093SA, inclusive.
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Beechcraft Corporation Airplanes
Applicability, as the AD words it
This AD applies to the airplanes, certificated in any category, identified in paragraphs (c)(1) through (c)(5) of this AD. (1) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Mitsubishi Heavy Industries, Inc. Ltd.) Model MU-300 airplanes, serial numbers A003SA through A093SA inclusive. (2) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400 airplanes, serial numbers RJ-1 through RJ-65 inclusive. (3) Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400A airplanes, serial numbers RK-1 through RK-604 inclusive. (4) Beechcraft Corporation (Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400T (T-1A) airplanes, serial numbers TT-1 through TT-180 inclusive. (5) Beechcraft Corporation Beechcraft Corporation (Type Certificate Previously Held by Hawker Beechcraft Corporation; Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400T (TX), serial numbers TX-1 through TX-13 inclusive.
- AD 2013-11-10 One-time
Cessna Aircraft Company Airplanes
This AD was prompted by reports that during maximum braking, if the brakes lock up and a skid occurs, a severe oscillatory yawing motion or "wheel walk" may develop, which could result in significant structural damage to the airplane.
Applicability, as the AD words it
(1) This AD applies to the following Cessna Aircraft Company (previously COLUMBIA or LANCAIR) Models LC40-550FG, LC41-550FG, and LC42-550FG airplanes that are certificated in any category: (i) LC40-550FG (Model 300), serial numbers 40001 through 40079; (ii) LC41-550FG (Model 400), serial numbers 41001 through 41108, 41501 through 41533, 41563 through 41800, and 411001 through 411161; and (iii) LC42-550FG (Model 350), serial numbers 42001 through 42084, 42501 through 42569, and 421001 through 421020.
- AD 2009-07-02 One-time
Hawker Beechcraft Corporation Model MU-300-10 Airplanes and Model 400 and 400A Series Airplanes; and Raytheon (Mitsubishi) Model MU-300 Airplanes
We are issuing this AD to prevent sudden shifting of a flightcrew seat, which could impair the flightcrew's ability to control the airplane.
Applicability, as the AD words it
This AD applies to the airplanes specified in Table 1 of this AD, certificated in any category. Table 1--Applicability Manufacturer Model Serial Nos. Hawker Beechcraft Model 400 series RJ-1 through RJ-65 Corporation. airplanes. inclusive. Hawker Beechcraft Model 400A series RK-1 through RK-93 Corporation. airplanes. inclusive. Hawker Beechcraft Model MU-300-10 A1001SA through Corporation. airplanes. A1011SA inclusive. Raytheon (Mitsubishi): Model MU-300 A003SA through airplanes. A091SA inclusive.
- AD 2008-24-10 One-time Engine
Pratt & Whitney Canada Corp. JT15D-5; -5B; -5F; and -5R Turbofan Engines
We are issuing this AD to prevent engine flameouts of one or both engines caused by excessive moisture and freezing in the P3 servo during certain flight conditions.
Applicability, as the AD words it
This AD applies to the following Pratt & Whitney Canada Corp. (P&WC) turbofan engines with compressor air to HMU delivery tube, part number (P/N) 3119150-01 installed: (1) JT15D-5 turbofan engines, serial numbers (SNs) below and including SN PCE-100411. (2) JT15D-5 turbofan engines, SNs below and including SN PCE- JA0818. (3) All JT15D-5B turbofan engines. (4) All JT15D-5F turbofan engines. (5) JT15D-5R turbofan engines SNs below and including SN PCE- JG0104. (6) All JT15D-5 turbofan engines converted to model JT15D-5R by incorporation of P&WC Service Bulletin No. 7605. These engines are installed on, but not limited to, Hawker Beechcraft models 400, 400A, and 400T airplanes.
- AD 2006-16-18 One-time
Sandel Avionics Incorporated Model ST3400 Terrain Awareness Warning System/Radio Magnetic Indicator (TAWS/RMI) Units Approved Under Technical Standard Order(s) C113, C151a, or C151b; Installed on Various Small and Transport Category Airplanes
We are issuing this AD to prevent a bearing error, which could lead to an airplane departing from its scheduled flight path, which could result in a reduction in separation from, and a possible collision with, other aircraft or terrain.
Applicability, as the AD words it
This AD applies to Sandel Avionics Incorporated (Sandel) Model ST3400 terrain awareness warning system/radio magnetic indicator (TAWS/RMI) units approved under Technical Standard Order(s) C113, C151a, or C151b; as identified in Sandel ST3400 Service Bulletin SB3400-01, Revision B, dated September 15, 2004; as installed on various small and transport category airplanes, certificated in any category, including, but not limited, to the airplane models listed in Table 1 of this AD. Table 1.--Manufacturers/Airplane Models Manufacturer Airplane model(s) Airbus: A300. Avions Marcel Dassault-Breguet Aviation (AMD/BA).. Falcon 10. Boeing: 727, 737, 747. Bombardier (LearJet): 24, 35, 36, 55. British Aerospace (Operations) Limited: Jetstream Series 3101. Cessna: 208, 208B, 421C; 501, 525, 550, 560, 650, S550. Embraer: EMB-120. Dassault-Aviation: Mystere-Falcon 50, Mystere-Falcon 200. Gulfstream: G-I, G-1159A (G-III) Israel Aircraft Industries (IAI): 1124, 1125 Westwind Astra. McDonnell Douglas: DC-10. Piper: PA-31T2. Raytheon: 58; 1900D, 400; A36; BAe.125 Series 800A; HS.125 Series 600A/700A; Hawker 800-XP; 200, 300, 350; A200, B100, B200, B300, C90, C90A, C90B, E90, F90; MU-300-10. Sabreliner: 60 (NA-265-60). Twin Commander: 500-A, 695A. Viking Air Limited: DHC-6.
- AD 2007-19-05 One-time
Hawker Beechcraft Model 400, 400A, and 400T Series Airplanes
We are issuing this AD to prevent failure of the attachment fasteners on the engine cowling panels, which could result in separation of a panel from the airplane, and consequent damage to airplane structure.
Applicability, as the AD words it
This AD applies to Hawker Beechcraft Model 400, 400A, and 400T series airplanes, certificated in any category; as identified in Raytheon Service Bulletin SB 54-3788, dated December 2006.
- AD 2006-21-02 One-time
Raytheon (Beech) Model 400, 400A, and 400T Series Airplanes; and Raytheon (Mitsubishi) Model MU-300 Airplanes
Applicability, as the AD words it
This AD applies to all Raytheon (Beech) Model 400, 400A, and 400T series airplanes; and Raytheon (Mitsubishi) Model MU-300 airplanes; certificated in any category.
- AD 2006-15-16 One-time
Raytheon (Beech) Model 400 and 400A Series Airplanes
We are issuing this AD to prevent over- voltage conditions of the DC starter generator due to the incompatibility between certain generator control units (GCUs), which could result in the loss of normal electrical power, damage to some electrical components, or blown fuses during flight, and consequent unrecoverable loss of some or all essential equipment.
Applicability, as the AD words it
This AD applies to the airplanes identified in Table 1 of this AD, certificated in any category. Table 1.--Applicability Raytheon (Beech) model-- Serials-- On which-- (1) 400 series airplanes: RJ-1 through RJ- Kit part number (P/N) 65 inclusive. 128-3004-1 P or 128- 3004-3 P has been incorporated (Lucas Aerospace/Goodrich Direct Current (DC) Starter Generator). (2) 400A series airplanes: RK-1 through RK- Kit P/N 128-3004-1 P 23 inclusive. or 128-3004-3 P has been incorporated (Lucas Aerospace/ Goodrich DC Starter Generator).
- AD 2006-14-03 Engine
Honeywell International Inc. TPE331 Series Turboprop, and TSE331-3U Model Turboshaft Engines
Applicability, as the AD words it
This AD applies to Honeywell International Inc. TPE331-1, - 1U, -1UA, -2, -2UA, -3U, -3UW, -3W, -5, -5A, -5AB, -5B, -5U, -6, - 6A, -6U, -8, -8A, -9, -9U, -10, -10A, -10AV, -10B, -10G, -10GP, - 10GR, -10GT, -10J, -10N, -10P, -10R, -10T, -10U, -10UA, -10UF, - 10UG, -10UGR, -10UJ, -10UK, -10UR, -11U, -11UA, -12, -12B, -12JR, - 12UA, -12UAR, -12UER, and -12UHR series turboprop and TSE331-3U model turboshaft engines. These engines are installed on, but not limited to, the following aircraft: Manufacturer Airplane model Aero Planes, LLC (formerly McKinnon G-21G. Enterprises). Allied AG Cat Productions (formerly G-164 series. Schweizer). Ayres: S-2R series. British Aerospace Ltd (formerly 3201 series, and HP.137 Jetstream). Jetstream MK.1. Cessna Aircraft Company: 441 Conquest. Construcciones Aeronauticas, s.a. C-212 series. (CASA). DeHavilland: DH104 series 7AXC (Dove). Dornier: 228 series. Fairchild: SA226 AND SA227 series (Swearingen Merlin and Metro series). Grumman American: G-164 series. Mitsubishi: MU-2B series (MU-2 series). Pilatus: PC-6 series (Fairchild Porter and Peacemaker). Polskie Zaklady Lotnicze Spolka PZL M18, PZL M18A, PZL M18B. (formerly Wytwornia Sprzetu Komunikacyjnego). Prop-Jets, Inc: 400. Raytheon Aircraft (formerly Beech): C45G, TC-45G, C-45H, TC-45H, TC- 45J, G18S, E18S-9700, D18S, D18C, H18, RC-45J, JRB-6, UC- 45J, 3N, 3NM, 3TM, B100, C90, and E90. Shorts Brothers and Harland, Ltd: SC7 (Skyvan) series. Thrush (Rockwell Commander): S-2R. Twin Commander (Jetprop Commander): 680 and 690 series. Manufacturer Helicopter Model Sikorsky: S-55 series (Helitec Corp. S55T).
- AD 2005-14-12 Recurring Propeller
Hartzell Propeller Inc. Models HC-B3TN-2, HC-B3TN-3, HC-B3TN-5, HC-B3MN-3, HC-B4TN-3, HC-B4TN-5, HC-B4MN-5, HC-B4MP-3, HC-B4MP-5, and HC-B5MP-3 Propellers
We are issuing this AD to prevent propeller mounting bolt failures or improperly secured propellers, which could lead to separation of the propeller from the airplane.
Applicability, as the AD words it
This AD applies to Hartzell Propeller Inc. models HC-B3TN-2, HC-B3TN-3, HC-B3TN-5, HC-B3MN-3, HC-B4TN-3, HC-B4TN-5, HC-B4MN-5, HC-B4MP-3, HC-B4MP-5, and HC-B5MP-3 propellers installed with propeller mounting bolts, part number (P/N) B-3339. These propellers are installed on, but not limited to, the airplanes listed in the following Table 1: Table 1.--Airplanes That Propellers Are Installed on, But Not Limited To ADVANCED AERO & STRUCTURES, INC. 450. AEROCOMMANDER: 680T, 680V, 681, 690, 690A, 690B, 690C, 695, 695A. AEROSPATIALE (SOCATA): TB-31 (Non U.S. type certificated (TC'd) product). AIR TRACTOR: AT-300, AT-301, AT-302, AT-400, AT-401, AT-402, AT-402A, AT-402B, AT- 501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-602, AT-802. AMERICAN AVIATION (GRUMMAN): G-164, G-164B, G-164B-15T, G-164B-34T, G-164D. AYRES: S-2R, S-2R-R1340, S-2R-R3S, S-2R-G1, S-2R-G5, S-2R-G6, S-2R-G10, S- 2R-T6, S-2R-T11, S-2R-T15, S-2R-T34, S-2R-T-45, S-2R-T65, S-2RHG- T65. BAE 137. BEECH (Raytheon): (D, E)18 (C, S), (T, C)45(G, H, J), and E18S-9700 (with turbine conversions), 100, A100, A100A, B100, 1900C, 200(T), 200C(T), B200(T), B200C(T), 300, 300LW, B300, 65-90, -A90, -A90-1, -A90-2, - A90-4, B90, C90, C90A, E90, F90, H90, 99, 99A, A99, A99A, B99, C99, A36 and A36TC (with turbine conversions), 34C, T34C, T34C-1. CASA: C-212-CB, C-212-CC, C-212-CF-CF. CESSNA: 208, 208A, 208B, 402, 421B, 421C, 425, 441, P210N (with turbine conversions). DE HAVILLAND DH114. DE HAVILLAND CANADA: DHC-2, DHC-2 MKIII, DHC-3, DH6-1, DHC-6-100, DHC-6-200, DHC-6-300. DORNIER: 128-6, DO228-100, -101, -200, -201, -202, -212. DOUGLAS DC-3C (with turbine conversions). EMBRAER: EMB-110-P1, -P2, EMB-111, EMB-121A1, EMB-312 (Non U.S. TC'd product). ENAER T-35-TX (Non U.S. TC'd product). FAIRCHILD AIRCRAFT: SA226-AT, -T, -TB, -TC. FAIRCHILD-HILLER (PILATUS) AU-23 (Non U.S. TC'd product). FLUG & FAHRZEUGWERKE AG AS202/32TP (Non U.S. TC'd product). FUJI KM-2D (T-5) (Non U.S. TC'd product). GRUMMAN S-2 (with turbine conversions). GRUMMAN (GULFSTREAM AERO) G73 (with turbine conversions). GRUMMAN (MCKINNON) G21E, G (with turbine conversions). HAFEI AVIATION INDUSTRY CO. Y12, Y12IV (Non U.S. TC'd product). HELIO: HST-550, -550A. ICA (ROMANIA) IAR-825TP (Non U.S. TC'd product). ISRAEL AIRCRAFT INDUSTRIES: 101, 101B. KOREAN AEROSPACE INDUSTRIES KTX-IT (Non U.S. TC'd product). MAULE: M-7-420, MX (T)-7-420. MITSUBISHI: MU-2B, MU-2B-10, -15, -20, -25, -26, -30, -35, -36, -40, -60, MU-2B- 25A, -26A, -35A, -36A. NORD 262 (FRAKES), and (NORD) Model 262(A) modified by Supplemental Type Certificate (STC) SA2369SW. NORMAN AEROPLANE: NA 6, NAC 6-65 (Non U.S. TC'd product). POLISH AVIATION (MIELEC): M-28, M-28B. PACIFIC AEROSPACE FU24(A)-950/-954. PACIFIC AEROSPACE (FLETCHER): FU-24 CRESCO 08-600, FU-24 CRESCO 08-750XL. PIAGGIO P-166 DL3. PILATUS: PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, PC-6/C1-H2, PC-7. PIPER: PA-31P, PA-31T, PA-31T1, PA-31T2, PA-31T3, PA-42, PA-42-720, PA-42-- 720R. PROP JETS INC. 400 (Non U.S. TC'd product). PZL MIELEC: M18, M18A, M18B, M27, PZL-106BT, PZL-130TE. ROCKWELL OV-10. SCHWEIZER (GRUMMAN) G-164, G-164A and G-164B (with turbine conversions). SHORT BROTHERS: SC7 SERIES 3, SD3-30 VARIANT 200, SD3-SHERPA VARIANT 200, SD3-60 VARIANT 200, SD3-60 SHERPA VARIANT 200. SIAI MARCHETTI (AERMACCHI): F.260C, F.260D, SM-1019, SF600 CANGURO. VALMET L-90TP (Non U.S. TC'd product). VULCANAIR (PARTENAVIA): AP68TP-300, AP68TP-600. WALLAROO 605 (Non U.S. TC'd product). WEATHERLY 620TP.
- AD 2004-22-02 One-time
Raytheon (Beech) Model MU-300-10, 400, 400A, and 400T Series Airplanes; and Raytheon (Mitsubishi) Model Beech MU-300 Airplanes
This AD was prompted by a report of fuel leaking from components in the spoiler mixer bay of several Raytheon (Beech) Model 400A series airplanes.
Applicability, as the AD words it
This AD applies to Raytheon (Beech) Model MU-300-10, 400, 400A, and 400T series airplanes; and Raytheon (Mitsubishi) Model Beech MU-300 airplanes; certificated in any category; as listed in Raytheon Service Bulletin SB 53-3486, dated June, 2003.
- AD 2002-25-02 One-time Engine
Honeywell International Inc. TPE331-3, -5, -6, -8, -10, and -11 Series Turboprop and TSE331-3 Series Turboshaft Engines
To prevent an uncontained engine failure, in-flight shutdown, and secondary damage.
Applicability, as the AD words it
This airworthiness directive (AD) is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331-3, -5, -6, -8, -10, and -11 series turboprop and TSE331-3 series turboshaft engines. These engines are installed on, but not limited to Ayres S-2R series; Beech 18 and 45 series and Models JRB-6, 3N, 3NM, 3TM, and B100; Cessna Model 441; Construcciones Aeronauticas, S.A. (CASA) C-212 series; De Havilland DH 104 series 7AXC (Dove); Dornier 228 series; Fairchild SA226 and SA227 series (Swearingen Merlin and Metro series); Grumman American G-164 series; Jetstream 3101; Mitsubishi MU-2B series (MU-2 series); Prop-Jets, Inc. Model 400; Rockwell Commander S-2R; Shorts Brothers and Harland, Ltd. SC7 (Skyvan); Pilatus PC-6 series (Fairchild Porter and Peacemaker); and Schweizer G-164 series; and Twin Commander Aircraft Corp. (Jetprop Commander) Models 695 and 695A airplanes; and Sikorsky S-55 series (Helitec Corp. S55T) helicopters.
- AD 2002-21-15 One-time Engine
Honeywell International Inc. TPE331 Series Turboprop and TSE331-3U Series Turboshaft Engines
Applicability, as the AD words it
This airworthiness directive (AD) is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Engine Division, Garrett Turbine Engine Company, and AiResearch Manufacturing Company of Arizona) TPE331-1, -2, -2UA, -3U, -3UW, -5, -5A, -5AB, -5B, -6, and -6A series turboprop and TSE331-3U series turboshaft engines with second stage turbine stator assemblies, part numbers (P/N's) 894528-1, -2, -3, -5, -6, -10, and -11. These engines are installed on, but not limited to Ayres S-2R series; Beech 18 and 45 series and model JRB-6, 3N, 3NM, 3TM, and B100 airplanes; Construcciones Aeronauticas, S.A. (CASA) C-212; De Havilland DH104 series 7AXC (Dove); Dornier 228 series; Fairchild SA226 series (Swearingen Merlin and Metro series); Grumman American G-164 series; Mitsubishi MU-2 and MU-2B series; Pilatus PC-6 series (Fairchild Porter and Peacemaker); Prop-Jets, Inc. Model 400; Rockwell Commander S2-R; Schweizer G-164 series; Shorts Brothers and Harland, Ltd. SC7 (Skyvan); and Twin Commander 680 and 690 series (Jetprop Commander) airplanes; and Sikorsky S-55 series (Helitec Corp. S55T) helicopters.
- AD 2002-01-23 Recurring
Raytheon Model Beech 400, 400A, and 400T Series Airplanes; Model Beech MU-300-10 Airplanes; and Model Mitsubishi MU-300 Airplanes
To prevent failure of the engine mount and possible loss of the engine, and consequent loss of control of the airplane.
Applicability, as the AD words it
The following airplanes, certificated in any category: Table 1.--Applicability Model Serial Numbers Beech 400 series airplanes: RJ-1 through RJ-65 inclusive. Beech 400A series airplanes: RK-1 and subsequent. Beech 400T series airplanes: TT-1 through TT-180 inclusive. Beech 400T-1 airplanes: TX-1 through TX-11 inclusive. Beech MU-300-10 airplanes: A1001SA through A1011SA inclusive. Mitsubishi MU-300 airplanes: A003SA through A091SA inclusive.
- AD 2001-24-11 One-time
Raytheon Model Beech 400, 400A, and 400T Series Airplanes, Model Mitsubishi MU-300 Airplanes, and Model Beech MU-300-10 Airplanes
To prevent reduced controllability of the airplane due to loss of airspeed indication by ensuring that the flightcrew is advised of in-flight procedures in the event of loss of airspeed indication.
Applicability, as the AD words it
All Model Beech 400, 400A, and 400T series airplanes, Model Mitsubishi MU-300 airplanes, and Model Beech MU- 300-10 airplanes; certificated in any category.
- AD 2001-03-06 Recurring
Raytheon (Beech) Model MU-300, MU-300-10, 400, and 400A Series Airplanes
Applicability, as the AD words it
All Model MU-300, MU-300-10, 400, and 400A series airplanes, certificated in any category.
- AD 2000-25-04 One-time
Raytheon (Beech) Model MU-300, MU-300-10, 400, 400A, and 400T Series Airplanes
To prevent an asymmetric braking condition and a longer stopping distance due to sudden loss of normal braking to the left wheel, which could result in the airplane overrunning the runway surface.
Applicability, as the AD words it
Model MU-300, MU-300-10, 400, 400A, and 400T series airplanes; as listed in Raytheon Aircraft Service Bulletin SB 32-3300, dated December 1999; certificated in any category.
- AD 99-21-26 One-time
Raytheon (Beech) Model 400, 400A, 400T, and MU-300-10 Airplanes
To prevent uncommanded nose-down pitch at certain flap settings during icing conditions.
Applicability, as the AD words it
All Model 400, 400T, and MU-300-10 airplanes; and Model 400A airplanes having serial numbers RK-1 through RK-107 inclusive; certificated in any category.
- AD 98-06-30 One-time
Raytheon (Beech) Model 400, 400A, 400T, MU-300, and MU-300-10 Airplanes
To prevent cracking and consequent failure of the outflow/safety valves, which could result in rapid decompression of the airplane.
Applicability, as the AD words it
The following models and series of airplanes, certificated in any category, equipped with AlliedSignal outflow/ safety valves, as identified in AlliedSignal Aerospace Service Bulletin 103570-21-4012, Revision 1, dated May 30, 1995: Model of airplane Serial Nos. 400: RJ-1 through RJ-65 inclusive. 400A: RK-1 through RK-42 inclusive. 400T (military): TT-4 and TT-19. MU-300: S/N A001SA through A091SA inclusive. MU-300-10: A1001SA through A1011SA inclusive.
- AD 98-04-15 One-time Engine
AlliedSignal Inc. TPE331 Series Turboprop and TSE331 Turboshaft Engines
To prevent third stage turbine wheel separation due to fatigue cracking and shifting of the third stage turbine stator, which could result in an uncontained engine failure and damage to the aircraft.
Applicability, as the AD words it
AlliedSignal Inc., (formerly Garrett Engine Division, Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) Model TPE331-1, -2, -2UA, -3U, - 3UW, -5, -5A, -5AB, -5B, -6, and -6A turboprop and TSE331-3U turboshaft engines with third stage turbine stators, Part Number (P/ N) 868379-3, except those engines with turbine stators listed by Serial Number (S/N) in Table 1 of the National Flight Services Alert Service Bulletin (ASB) No. NF-TPE331-A72-10961, dated April 28, 1997. These engines are installed on but not limited to: Mitsubishi MU-2B series (MU-2 series); Construcciones Aeronauticas, S.A. (CASA) C-212 series; Fairchild SA226 series (Swearingen Merlin and Metro series); Prop-Jets, Inc. Model 400; Twin Commander 680 and 690 (Jetprop Commander); Rockwell Commander S-2R; Shorts Brothers and Harland, Ltd. SC7 (Skyvan); Dornier 228 series; Beech 18 and 45 series and Models JRB-6, 3N, 3NM, 3TM, and B100; Pilatus PC-6 series (Fairchild Porter and Peacemaker); De Havilland DH 104 series 7AXC (Dove); Ayres S-2R series; Grumman American G-164 series; and Schweizer G-164 series airplanes; and Sikorsky S-55 series (Helitec Corp. S55T) helicopters.
- AD 95-25-06 One-time
Beech Model 400, 400A, and 400T (Military T-1A) Airplanes
To ensure that the standby instrument lighting system adequately illuminates the standby instrument, if normal electrical power is lost or is turned off as a result of a fire or smoke in the cockpit.
Applicability, as the AD words it
Model 400 airplanes, serial number RJ-61; 400A airplanes, serial numbers RK-1 through RK-80 inclusive; and 400T (military T-1A) airplanes, serial numbers TT-1 through TT-108 inclusive; certificated in any category.
- AD 95-18-04 One-time
Beech Model 400 and 400A Airplanes
To prevent reduced controllability of the airplane.
Applicability, as the AD words it
Model 400 airplanes, serial RJ-61; and Model 400A airplanes, serials RK-1 through RK-77 inclusive, and RK-79 through RK-92 inclusive; certificated in any category.
- AD 95-16-08 One-time Engine
AlliedSignal, Inc. TPE331 Series Turboprop and TSE331 Series Turboshaft Engines
To prevent uncontained failure of turbine rotors, fire, or loss of aircraft control.
Applicability, as the AD words it
AlliedSignal, Inc. (formerly Allied-Signal, Inc., Garrett Engine Division, Garrett Turbine Engine Company, and AiResearch Manufacturing Co. of Arizona), TPE331-25, -43, -1, -2, - 3, -5, -6, -8, -10, -11, and -12 series, and -55B and -61A Model turboprop engines; and TSE331-3U Model turboshaft engines. These engines are installed on but not limited to Mitsubishi MU-2B series (MU-2 series); Construcciones Aeronauticas, S.A. (CASA) C-212 series; Jetstream 3101 and 3201 series; Fairchild SA226 and SA227 series; Prop-Jets, Inc. Model 400; Cessna Model 441; Twin Commander Aircraft Corp. 680, 690, and 695 series, and Model 681; Rockwell Commander or Ayres Corp. S-2R series; Short Brothers and Harland, Ltd. SC7; Dornier 228 Series; Beech Aircraft Corp. 18 and 45 series and Models JRB-6, 3N, 3NM, 3TM, and B100; Pilatus PC-6 series; DeHavilland DH 104 Dove series; Grumman Model TS-2A; Grumman American Model G-164C; and Schweitzer Aircraft Corp. Model G-164 series aircraft. Note: This AD applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must use the authority provided in paragraph (c) to request approval from the FAA. This approval may address either no action, if the current configuration eliminates the unsafe condition, or different actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any engine from the applicability of this AD.
Radar reads the logbooks and ties each AD to the entries that show how and when it was complied with, with recurring ADs due by date and hours.
QUESTIONS
AD lookup questions
Sources: FAA final rules under 14 CFR part 39, from the Federal Register; make and model from the FAA aircraft registry. The FAA’s Dynamic Regulatory System holds the official AD list.
What is an airworthiness directive (AD)?
An airworthiness directive is a legally enforceable rule the FAA issues under 14 CFR part 39 when it finds an unsafe condition in an aircraft, engine, propeller or appliance that is likely to exist in others of the same design. It says which products it applies to and what must be done, and by when: an inspection, a part replacement, a modification or a limitation. No one may operate a product to which an AD applies except in accordance with it.
How do I look up the ADs for my aircraft?
Type the N-number, or the make and model, into the box above. Radar finds the aircraft's make and model in the FAA registry and lists every AD published in the Federal Register whose applicability names it, newest first, with the AD's own applicability text and a link to the official document. The FAA's Dynamic Regulatory System (drs.faa.gov) holds the official list.
Does every AD in the results apply to my aircraft?
Not necessarily. An AD can be limited to serial number ranges, to aircraft with certain parts or modifications installed, or to a configuration. The results are ADs that may apply because they name the make and model. A certificated mechanic or inspector determines applicability against the aircraft's serial number and records, and records how each applicable AD was complied with.
What is the difference between a recurring and a one-time AD?
A one-time AD is complied with once, for example by replacing a part. A recurring (repetitive) AD requires an action again at an interval, such as an inspection every 100 hours or every 12 months, until a terminating action ends it. Radar marks an AD Recurring when its text requires repetitive actions; always read the AD for the intervals.
What does superseded mean?
When the FAA replaces an AD with a new one, the old AD is superseded: its requirements are carried into, or replaced by, the new AD. Results show the ADs in effect by default; superseded and removed ADs can be shown for the history.
Where does this data come from?
The Federal Register, where the FAA publishes every AD as a final rule. Radar reads each one from the Federal Register API (12,857 ADs since 1995) and refreshes the list every weekday. Make and model come from the FAA aircraft registry. ADs issued before 1995 are not in the Federal Register's online edition and are not included.
Are engine and propeller ADs included?
Only when their applicability names the aircraft. Most engine and propeller ADs name the engine or propeller model, so check those by the installed engine and propeller models. Appliance ADs that list the aircraft among those the appliance can be installed on are included and marked Appliance.
Know which ADs apply, and where each one was signed off.
Radar reads every logbook page, typed or handwritten, and builds one searchable record per tail: times, inspections, ADs and components, each tied to the page it came from.