# N84GP: 1983 Gulfstream Aerospace 550

- Status: Valid registration (dealer)
- Airframe: [Gulfstream Aerospace 550](https://openairdocs.org/model/gulfstream-aerospace-550) (registry code 3970250, 6 seats)
- Engine: [Pratt & Whitney Canada JT15D-1 series](https://openairdocs.org/engine/pratt-whitney-canada-jt15d-1-series) (registry code 52060)
- Serial number: 551
- Year built: 1983
- Type: Fixed wing single engine
- Engine type: Turbo-jet
- Airworthiness: Experimental, research and development
- Airworthiness date: September 16, 1985
- Mode S code: AB7E24
- Registered owner: [Gulfstream Aerospace Corp](https://openairdocs.org/faa-owner/GULFSTREAM%20AEROSPACE%20CORP)
- Location: [Savannah, GA](https://openairdocs.org/faa-place/GA/Savannah)
- Owner type: Corporation
- Owner's area on the map: 32.1832° N, 81.1979° W: Placed by OpenAirDocs at the center of ZIP code 31407, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=84GP
- Page: https://openairdocs.org/aircraft/N84GP

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney Canada JT15D-1 model are included.

## ADs that may apply (OpenAirDocs): 4 in force

### Matched by airframe (Gulfstream Aerospace 550)

None in force.

### Matched by engine (Pratt & Whitney Canada JT15D-1 series)

- [AD 2023-03-12](https://openairdocs.org/ad/2023-03-12): Turbine Engine Compressor Section · Pratt & Whitney Canada JT15D-1, JT15D-1A and JT15D-1B. Effective Mar 31, 2023
- [AD 93-18-08](https://openairdocs.org/ad/93-18-08): High Pressure Turbine (HPT) Assembly · Pratt & Whitney Canada JT15D-1, JT15D-1A, JT15D-1B and 4 more. Effective Nov 24, 1993
- [AD 87-10-01](https://openairdocs.org/ad/87-10-01): Fan Blades · Pratt & Whitney Canada JT15D-1, JT15D-1A, JT15D-1B and 3 more. Effective Jul 15, 1988
- [AD 74-26-05](https://openairdocs.org/ad/74-26-05): Fuel Control Units · Pratt & Whitney Canada JT15D-1 and JT15D-4. Effective Jan 2, 1975

### Historical (superseded or no longer in force)

- [AD 2004-04-09](https://openairdocs.org/ad/2004-04-09) (historical): Impellers · Pratt & Whitney Canada JT15D-1, JT15D-1A and JT15D-1B. Effective Apr 5, 2004

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N84GP.

## FAA accident and incident reports

None matched to N84GP.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (2)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Pratt & Whitney Canada JT15D-1 series)

- [STC SE2082NM](https://openairdocs.org/stc/SE2082NM): Manufacture of alternate oil gauge (dipstick) P/N 82-2100-1. Jennings W P & Assoc. Lists JT15D-1A
- [STC SE01232AT](https://openairdocs.org/stc/SE01232AT): Installation of Unison Ignition Lead, P/N 10-395428-3, 38.5-inch Type 3 Ignition Lead. Unison Industries

## Related

- Other Gulfstream Aerospace 550 aircraft: https://openairdocs.org/model/gulfstream-aerospace-550/aircraft.md
- The Pratt & Whitney Canada JT15D-1 series engine: https://openairdocs.org/engine/pratt-whitney-canada-jt15d-1-series.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.