N178B 1973 Gulfstream IIB (certified family)
- 1973Built
SPECIFICATIONS
Gulfstream IIB (certified family) specs
Published figures for the type, from public sources. A given aircraft varies with its completion, weight and mods.
- Model
- Gulfstream IIB (certified family)
- Year
- 1973
- Serial number
- 125
- Engines
- 2 × Rolls-Royc SPEY 511-8
- Thrust
- 11,400 lbf each
THE AIRCRAFT’S LIFE
N178B, from delivery to today.
Registration events from FAA records, compiled October 2026. Maintenance, damage and component history live in the logbooks, not the registry.
-
Registry record
Earlier use of the number: N178B was assigned to another aircraft, a 1948 Bell 47G. That registration was cancelled on this date.
FAA registry -
Missile Defense Agency (Mda)
Certificate of registration issued as N178B.
FAA registry -
Registry record
Airworthiness date on the current FAA record (experimental category).
FAA registry
FAA REGISTRATION
Registration details
- Registration
- N178B
- Status
- Current as of October 2026
- Certificate issued
- Nov 5, 2004
- Airworthiness date
- Jul 12, 2023
- Last FAA action
- Jun 23, 2023
- Registration expires
- Nov 30, 2028
- Mode S code (hex)
- A136FE
- Aircraft category
- Large-cabin jet
- Weight class
- Over 20,000lbs
From FAA registry data as of October 2026. Check the FAA registry for the current record.
OWNERSHIP
Registered owner
Missile Defense Agency (Mda)
ESTIMATED VALUE
What N178B might be worth
No type-level range
Exhibition, racing, research and limited-category aircraft (warbirds, replicas and former military types among them) are valued one by one, on their history and condition. Radar does not put a type-level range on them. Total time, condition, equipment and the completeness of the logbooks set what one is worth.
Open the aircraft value toolSOURCES
Where this page comes from
Built from FAA registry records, manufacturer specifications, and public flight-tracking and market data, compiled October 2026. Values come from Radar’s aircraft value model. Owners and operators can ask for a correction or removal.
BUYING, SELLING OR FINANCING
What to check before a deal
- ADs that may apply to this aircraft →FAA airworthiness directives that name N178B’s make and model
- N-number lookupLook up any other US aircraft by its registration
- Pre-buy records reviewWhat to read in the logbooks before you sign
- Aircraft title searchLiens, registrations and the chain of title
- Aircraft valuationHow records, time and programs move the price
- Aircraft maintenance recordsWhat a complete records package holds
Own or manage N178B? Put its logbooks in Radar.
Radar reads every logbook page, typed or handwritten, and builds one searchable record for the aircraft: times, inspections, ADs and components, each tied to the page it came from.
N178B is not a Radar customer record. This page is built from public sources as of October 2026. Owners and operators can ask for a correction or removal.