- Manufacturer (registry)
- P & W
- Model
- JT3D-7A
- Registry code
- 51689
- Installed in
- 0 registered aircraft
- Type
- Turbo-fan
- Power
- 19,285 lb thrust
- Data sheet
- TCDS1E8
- Holder
- Pratt & Whitney Division
Model codes come from the FAA registry’s reference file.
On this page
Airworthiness directives that may apply · 8
ADs whose products match this engine model. Each AD’s applicability may narrow it by serial number, part number or configuration.
| 1964 | 1 |
|---|---|
| 1974 | 1 |
| 1978 | 1 |
| 1980 | 1 |
| 1982 | 1 |
| 1997 | 1 |
| 1999 | 1 |
Engine · Pratt & Whitney JT3D-7A
AD 99-01-08Stage 7 through Stage 15 High-Pressure Compressor (HPC) DisksAD 96-23-10Steel High Pressure Compressor (HPC) diskAD 82-14-02Third Stage Turbine DisksAD 80-12-51 R2First Stage Fan BladeAD 78-11-03First Stage Fan BladesAD 74-15-05Compressor DiscsAD 64-05-05Throttle Valve AssembliesAD 56-06-02Cylinder Flange Attaching StudQuery with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code IN ('51689'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT d.ad_number, d.status, d.subject, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code IN ('51689'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Registered aircraft · 0
No aircraft currently registered with this engine model
NTSB investigations
No NTSB investigations matched to aircraft with this engine modelMatched through the registry by N-number, so foreign aircraft and some older cases aren’t counted.
FAA incident reports
No reports matched to aircraft with this engine modelMatched through the registry by N-number, so foreign aircraft and some older reports aren’t counted.
Service difficulty reports · 7
SDR ARWA20061001Compressor · stalledLOG PAGE NR 124562. ABORTED TAKEOFF AT 105 KTS FOLLOWING NR 4 ENGINE COMPRESSOR STALL. INSPECTED NR 4 ENGINE COMPRESSOR SURGE BLEED VALVE AND TIGHTEN ALL SENCE LINES IAW MM 75-30-01/201; OPERATIONAL CHECK NORMAL ON ENGINE RUN IAW M/M 71-00/501.SDR IXXA060436OPrbc · malfunctionedDURING TAKE-OFF FROM LPLA NUMBER 3 ENGINE DID NOT ACHIEVE TAKE-OFF POWER. THE CREW REJECTED THE TAKE-OFF AT 100 KNOTS AND RETURNED TO BLOCKS. MAINTENANCE FOUND THE PRBC TO BE DEFECTIVE. THE PRBC WAS REPLACED AND THE OPERATIONAL CHECK WAS SATISFACTORY, THE AIRCSDR ARWA20050201Fuel Control · failedON TAKEOFF, LOSS ENGINE OIL PRESSURE PRIOR TO V-1 ABORTED TAKEOFF; ALSO NOTICED COMPRESSOR STALLED. TROUBLESHOOTING FOUND NR 4 ENGINE FUEL CONTROL UNIT (FCU) LEAKING. REMOVED AND REPLACED FUEL CONTROL UNIT IN ACCORDANCE WITH MM 73-20-1. OPERATIONAL CHECK FOSDR ARWA20040505Blade · damagedNR 2 ENGINE EGT (EXHAUST GAS TEMPERATURE) IS 40 DEGREES HIGHER THAN OTHER ENGINES IN CRUISE. ALL OTHER PARAMETERS NORMAL. ON POST-FLIGHT INSPECTION, NR 2 ENGINE APPEARS TO HAVE T4 BLADES DAMAGED. UPON INSPECTION, NR 2 ENGINE TURBINE 1ST STAGE (T-1) VANE BLASDR IXXA0300011OEngine · wornAFTER DEPARTURE FROM KBFI ENROUTE TO KPDX CREW NOTICED OIL QUANTITY IN NUMBER 2 ENGINE DROPPED ABNORMALLY. AS A PRECAUTIONARY MEASURE THE #2 ENGINE WAS SHUTDOWN AND AIRCRAFT RETURNED TO KBFI FOR AN UNEVENTFUL LANDING. POSITIVE OIL PRESSURE WAS MAINTAINED THRU SDR IXXA96165Compressor · stalledAFTER TAKEOFF FROM TOL, NR 4 ENGINE EXPERIENCED A COMPRESSOR STALL, THE FLIGHT RETURNED TO TOL. MAINTENANCE TROUBLESHOT THE EPR SYSTEM, INTERSTAGE BLEED VALVE, AND CLEANED THE PS4 FILTER. OPERATIONAL CHECKS OF THE ENGINE, INDICATION SYSTEMS AND BLEED VALVE WSDR IXXA96158Engine · flamed outON CLIMB-OUT FROM BNA TO TOL, THE NR 1 ENGINE FLAMED OUT. THE IGNITORS WERE SELECTED FOR 'BOTH' AND A SUCCESSFUL RESTART WAS ACCOMPLISHED. THE AIRCRAFT CONTINUED TO TOL WITH NO ABNORMAL PROBLEMS. INSPECTION OF THE ENGINE AND FUEL SYSTEM REVEALED NO ABNORMAL
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = 'JT3D7A' ORDER BY difficulty_date DESC"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = 'JT3D7A' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
STCs that may be installed · 2
Approved for this engine model: the STC’s model list names it on its data sheet, or a series that includes it. The registry doesn’t record which STCs an aircraft has.
STC SE01110ATRemove and replace JT3D main accessory gearbox housing split line gasket with PTM International gasket.STC SE1WEValve assembly 126495. Limited to those engines having serial number suffix 'B'.
Query with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet'
WHERE engine_model_code IN ('51689')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet'
WHERE engine_model_code IN ('51689')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.