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.
N97ZT is a Honda HA-420 in the FAA registry (aircraft page). Matched on type certificate model HA-420.
RESULTS
7 ADs in effect may apply to N97ZT
- In effect7
- Recurring1
- Superseded or removed5
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.
Show only ADs in effect N97ZT’s registration record
- AD 2026-10-02 One-time
Honda Aircraft Company LLC Airplanes
This AD was prompted by a report of tool damage to multiple locations on the interior fuselage skin fiber at the forward pressure bulkhead ring angle and the omission of certain service material from the Airworthiness Limitations Section (ALS) of the maintenance manual.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC (Honda) Model HA- 420 airplanes, serial numbers 42000012 through 42000230, certificated in any category.
- AD 2026-06-71 Recurring
Honda Aircraft Company LLC Airplanes
This AD was prompted by a report that the flap pushrod assemblies are susceptible to corrosion.
Applicability, as the AD words it
This AD applies to the following Honda Aircraft Company LLC Model HA-420 airplanes, certificated in any category: (1) Group 1 airplanes: serial numbers 42000153 through 42000158 and 42000160 through 42000206; and (2) Group 2 airplanes: serial numbers 42000211, 42000212, and 42000215 through 42000287.
- AD 2026-01-01 One-time
Honda Aircraft Company LLC Airplanes
This AD was prompted by the discovery that the gap between the trailing edge wing nut plates and leading edge aileron balance weights may be less than the minimum required clearance.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC (Honda) Model HA- 420 airplanes, serial numbers 42000172, 42000235 through 42000265, and 42000267 through 42000272, certificated in any category, with aileron balance weight part number HJ1-15751-152-003 or HJ1-15751- 157-003 installed.
- AD 2023-11-03 One-time
Honda Aircraft Company LLC Airplanes
This AD was prompted by a report of in-flight smoke and fire that initiated from the windshield heat power wire braid.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers 42000011 through 42000179, 42000182, and 42000187, certificated in any category, with a windshield assembly installed that has a part number and serial number listed in table 5 of the Accomplishment Instructions in Honda Aircraft Company Alert Service Bulletin SB-420-56-002, Revision B, dated April 19, 2021 (Honda SB-420-56-002, Revision B).
- AD 2022-18-03 Superseded by AD 2023-11-03
Honda Aircraft Company LLC Airplanes
This AD was prompted by a report of in-flight smoke and fire that initiated from the windshield heat power wire braid.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers 42000011 through 42000179, 42000182, and 42000187, certificated in any category, with a windshield assembly installed that has a part number and serial number listed in table 5 of the Accomplishment Instructions in Honda Aircraft Company Alert Service Bulletin SB-420-56-002, Revision B, dated April 19, 2021 (Honda SB-420-56-002, Revision B).
- AD 2022-05-13 Superseded by AD 2022-18-03
Honda Aircraft Company LLC Airplanes
This AD was prompted by a report of in-flight smoke and fire that initiated from the windshield heat power wire braid.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers 42000011 through 42000179, 42000182, and 42000187, certificated in any category, with a windshield assembly installed that has a part number and serial number listed in table 5 of the Accomplishment Instructions in Honda Aircraft Company Alert Service Bulletin SB-420-56-002, Revision B, dated April 19, 2021 (Honda SB-420-56-002, Revision B).
- AD 2021-22-12 Superseded by AD 2026-06-71
Honda Aircraft Company LLC Airplanes
This AD was prompted by a report that the flap pushrod assemblies are susceptible to corrosion.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers 42000153 through 42000158 and 42000160 through 42000206, certificated in any category.
- AD 2020-04-14 One-time
Honda Aircraft Company LLC
This AD was prompted by reports of damage to the wheel speed transducer wiring harness due to excessive slack in the wiring harness assembly that allows contact with the main landing gear tire and the determination that the airplane flight manuals (AFMs) and quick reference handbooks (QRHs) contain incorrect procedures for anti-skid braking system failures.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers (S/Ns) 42000011 through 42000184, certificated in any category.
- AD 2018-21-13 One-time
Honda Aircraft Company LLC
This AD was prompted by reports of unannunciated asymmetric braking during ground operations and landing deceleration.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC (Honda) Model HA- 420 airplanes, all serial numbers, that: (1) Have power brake valve (PBV), part number (P/N) HJ1-13243- 101-005 or HJ1-13243-101-007, installed; and (2) are certificated in any category.
- AD 2018-15-06 One-time
Honda Aircraft Company LLC Airplanes
This AD was prompted by a report that several required maintenance tasks were omitted from "Airworthiness Limitations-- Inspection/Check" (Airworthiness Limitations section 05-60-00), of the Honda Aircraft Company HA-420 Airworthiness Limitation and Inspection Manual (ALIM), with a revision level prior to C1 and dated earlier than May 1, 2018.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes with a serial number in the range of 42000011 through 42000112, certificated in any category.
- AD 2018-11-05 Superseded by AD 2018-21-13
Honda Aircraft Company LLC Airplanes
This AD was prompted by reports of unannunciated asymmetric braking during ground operations and landing deceleration.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers 42000011 through 42000089, that: (1) have power brake valve, part number (P/N) HJ1-13243-101-005 or HJ1-13243-101-007, installed; and (2) are certificated in any category.
- AD 2018-06-10 Superseded by AD 2018-11-05
Honda Aircraft Company LLC
This AD was prompted by reports of unannunciated asymmetric braking during ground operations and landing deceleration.
Applicability, as the AD words it
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers 42000011 through 4200089, that: (1) have power brake valve, part number (P/N) HJ1-13243-101-005 or HJ1-13243-101-007, installed; and (2) are certificated in any category.
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.