# Pratt & Whitney R-1830-90D - Type: Engine model (FAA registry) - Registry code: 51622 - Manufacturer (registry): P & W - Model: R-1830-90D - Engine type: Reciprocating - Power: 1,200 hp - Installed in: 2 registered aircraft - Page: https://openairdocs.org/engine/pratt-whitney-r-1830-90d Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. None matched. ## Registered aircraft (2) - [N44587](https://openairdocs.org/aircraft/N44587): [Desert Air Transport Inc](https://openairdocs.org/faa-owner/DESERT%20AIR%20TRANSPORT%20INC), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1944, S/N 12857 - [N59314](https://openairdocs.org/aircraft/N59314): [N59314 LLC](https://openairdocs.org/faa-owner/N59314%20LLC), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), S/N 12363 ## NTSB investigations (3) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB GAA19CA492](https://openairdocs.org/ntsb/GAA19CA492), Aug 1, 2019: Douglas DC3C (N59314), Kenai, AK, substantial damage. Probable cause: The pilot's failure to maintain a proper approach path in gusting crosswind wind conditions, which resulted in landing short of the runway and impact with a ditch and runway light. - [NTSB CHI94LA074](https://openairdocs.org/ntsb/CHI94LA074), Jan 31, 1994: Douglas DC3C (N907Z), Anderson, IN, substantial damage. Probable cause: the pilot in command's inadequate remedial action after a loss of directional control during the takeoff ground roll. Related factors are the copilot's failure to maintain directional control, and… - [NTSB ANC79FA074](https://openairdocs.org/ntsb/ANC79FA074), Jun 27, 1979: Douglas DC3C (N59314), Bettles, AK, substantial damage ## FAA accident and incident reports (5) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20190731013059A](https://openairdocs.org/incident/20190731013059A), Jul 31, 2019: Douglas DC3C (N59314), Kenai, AK, Substantial damage. Aircraft flew a right hand pattern for runway 23. On final, experienced turbulence and approximately a 22+ knot left quartering headwind with gusts. Pilot… - [Incident 20100807047459I](https://openairdocs.org/incident/20100807047459I), Aug 7, 2010: Douglas DC3C (N44587), Tyonek, AK, Minor damage. Airplane struck known light and weather sock poles, while landing. - [Accident 19940131001259A](https://openairdocs.org/incident/19940131001259A), Jan 31, 1994: Doug DC3C (N907Z), Anderson, IN, Substantial damage. Copilot making takeoff. Veered left over corrected. Pilot took over. Poor traction on recovery. Struck VASI light. - [Incident 19860604033319I](https://openairdocs.org/incident/19860604033319I), Jun 4, 1986: Doug DC3C (N44587), Eugene, OR, Minor damage. Lost power on one engine. Engine shutdown and landing made. Number 10 cylinder failed, rod broke, hole in cowling. - [Accident 19790627037279A](https://openairdocs.org/incident/19790627037279A), Jun 27, 1979: Doug DC3 (N59314), Bettles, AK, Substantial damage. Landed fast and downwind half way down rwy. Unable to stop with heavy braking. Ground looped to stop. ## Service difficulty reports (23) As reported by operators and repair stations, by the model named in the report. - [SDR D7TA20211](https://openairdocs.org/sdr/D7TA20211), Oct 21, 2021: CYLINDER. CRACKED. ENGINE SHUT DOWN ON FLIGHT TO AKIAK - RIGHT ENGINE #6 CYLINDER CRACKED BETWEEN BARREL AND HEAD. - [SDR D7TA201709140001](https://openairdocs.org/sdr/D7TA201709140001), Sep 7, 2017: ENGINE. FAILED. ENGINE HAD HIGH TEMPERATURE AND LOW OIL PRESSURE. - [SDR D7TA2012090800001](https://openairdocs.org/sdr/D7TA2012090800001), Aug 17, 2012: CYLINDER. CRACKED. NUMBER ONE CYLINDER FAILURE ON THE RIGHT ENGINE. - [SDR 020204](https://openairdocs.org/sdr/020204), Feb 2, 2004: ENGINE. FAILED. IN CLIMB POWER IN ROUTE RT ENGINE BEGAN TO MISFIRE AND RUN ROUGH. OIL TEMP ALSO INCREASED. ENGINE WAS SHUTDOWN AND AIRCRAFT DIVERTED. ENGINE WAS FOUND VERY HARD - [SDR 092703](https://openairdocs.org/sdr/092703), Sep 29, 2003: ENGINE. FAILED. AT CRUISE POWER FOR 3 HOURS ENROUTE FROM LRD-GMU, RT ENGINE STARTED RUNNING ROUGH AND BLOWING OIL OUT OF THE CRANKCASE BREATHER. AIRCRAFT DIVERTED TO LFT. SUSPE - [SDR 092503](https://openairdocs.org/sdr/092503), Sep 25, 2003: ROD BEARING. FAILED. AT CLIMB POWER 10 MINUTES OUT OF GSO ENROUTE TO BIV RT ENGINE OIL TEMP. WENT TO 100 C, OIL PRESSURE DROPPED TO 40 PSI. AIRCRAFT RETURNED TO GSO. SUSPECTED MASTE - [SDR 82703](https://openairdocs.org/sdr/82703), Aug 27, 2003: CYLINDER. SEPARATED. AT CRUISE POWER FOR OVER 5 HOURS IN ROUTE MWO-LRD LEFT ENGINE STARTED RUNNING ROUGH. AIRCRAFT DIVERTED TO AUS. FOUND NR 1 CYLINDER HEAD SEPARATED FROM THE BARRE - [SDR 42403](https://openairdocs.org/sdr/42403), Apr 24, 2003: CYLINDER HEAD. SPLIT. AT CLIMB POWER IN ROUTE HZY-UDG RIGHT ENGINE DEVELOPED A VIBRATION AND A SLIGHT LOSS OF POWER. AIRCRAFT DIVERTED TO MWO. FOUND NR 1 CYLINDER HEAD SEPARATED FROM - [SDR 2002F00370](https://openairdocs.org/sdr/2002F00370), Apr 5, 2002: CYLINDER. SEPARATED. AT CRUISE POWER, LEFT ENGINE DEVELOPED A (SHAKE). ENGINE WAS SHUT DOWN AND AIRCRAFT DIVERTED. FOUND NR 4 CYLINDER LIFTED FROM ITS BASE. THE CYLINDER BARREL FAIL - [SDR AC92001F00000](https://openairdocs.org/sdr/AC92001F00000), Jun 26, 2001: CYLINDER. CRACKED. AT CRUISE POWER, LEFT ENGINE DEVELOPED A SLIGHT VIBRATION. AIRCRAFT WAS ENROUTE FROM DEPART TO ARRIVAL, DIVERTED. FOUND NR 14 CYLINDER, LEFT ENGINE CRACKED AT E - [SDR 20010208CW002](https://openairdocs.org/sdr/20010208CW002), Dec 8, 2000: ENGINE. LEAKING. IN ROUTE FROM RYV TO RDV, RT ENGINE STARTED LEAKING OIL OUT OF THE CRANKCASE BREATHER. DIVERTED TO FWA. SUSPECT SCAVAGE PUMP NOT OPERATED CORRECTLY. - [SDR 99ZZZX3680](https://openairdocs.org/sdr/99ZZZX3680), Aug 23, 1999: BEARING. FAILED. AT CRUISE POWER SETTING, LEFT ENGINE LOST POWER. AIRCRAFT DIVERTED TO VIN. FOUND METAL IN SCREEN AND REAR VALVES NOT MOVING. SUBMITTER SUSPECTED REAR MAIN BEARI - [SDR 99ZZZX2189](https://openairdocs.org/sdr/99ZZZX2189), May 2, 1999: ENGINE. FAILED. AIRCRAFT EN ROUTE FROM MBS/TPA. LEFT ENGINE STARTED TO LOSE POWER AND WOULD NOT MAINTAIN MANIFOLD PRESSURE. AIRCRAFT DIVERTED TO MWO. FOUND REAR CYLINDERS VALVE - [SDR 98ZZZX4501](https://openairdocs.org/sdr/98ZZZX4501), Nov 11, 1998: CYLINDER. FAILED. AFTER TAKEOFF ON CLIMB, LEFT ENGINE STARTED TO SHAKE. FOUND NR 14 CYLINDER WITH BROKEN EXHAUST VALVE. - [SDR 98ZZZX956](https://openairdocs.org/sdr/98ZZZX956), Jan 19, 1998: MAGNETO. FAILED. IN CRUISE POWER, PILOT REPORTED RIGHT ENGINE SHAKING. WHEN ON GROUND, MAGNETO CHECK SHOWED LEFT MAGNETO RUNNING VERY ROUGH. REMOVED MAGNETO AND FOUND IT SPARKIN - [SDR 97ZZZX3343](https://openairdocs.org/sdr/97ZZZX3343), Jun 26, 1997: INTAKE VALVE. FAILED. INTAKE VALVE ON NR 5M CYLINDER CAME APART AND PUNCHED A HOLE IN FRONT TOP OF CYLINDER WALL AND HEAD. - [SDR 97ZZZX2680](https://openairdocs.org/sdr/97ZZZX2680), May 16, 1997: LEAD. SHORTED. AIRCRAFT WAS EN ROUTE CLIMBING THROUGH 7,000 FEET IN VISABLE PRECIPITATION WHEN LEFT ENGINE STARTED RUNNING ROUGH. AIRCRAFT DIVERTED TO FORT WAYNE, INDIANA. MX - [SDR 97ZZZX834](https://openairdocs.org/sdr/97ZZZX834), Jan 18, 1997: CARBURETOR. MALFUNCTION. AFTER LANDING, LT ENGINE WOULD NOT IDLE FOR TAXI. OUTSIDE, AIR TEMP WAS AROUND ZERO DEGREES FAHRENHEIT. SUBMITTER STATED IT IS POSSIBLE SOMETHING INTERNALLY IN - [SDR 96ZZZX3797](https://openairdocs.org/sdr/96ZZZX3797), Jul 19, 1996: CARBURETOR. MALFUNCTION. ENGINE WILL NOT IDLE, DIES/RESTARTS OK. WILL NOT TAKE THROTTLE. WANTS TO BACKFIRE THROUGH CARBURETOR. REMOVED CARBURETOR. REPLACED WITH OVERHAULED UNIT. - [SDR 96ZZZX1086](https://openairdocs.org/sdr/96ZZZX1086), Feb 2, 1996: PUSHROD. BROKEN. ENGINE STARTED RUNNING ROUGH. FOUND NR 6 CYLINDER EXHAUST PUSHROD BROKEN IN TWO. THIS CAUSED EXHAUST VALVE IN NR 6 CYLINDER NOT TO OPEN. - [SDR 95ZZZX7013](https://openairdocs.org/sdr/95ZZZX7013), Dec 7, 1995: CYLINDER. HEAD SEPARATED. DURING APPROACH, LEFT ENGINE STARTED RUNNING ROUGH. INSPECTION FOUND NR 11 CYLINDER HEAD HAD SEPARATED FROM BARREL. - [SDR 95ZZZX3312](https://openairdocs.org/sdr/95ZZZX3312), Jun 14, 1995: ENGINE. MAKING METAL. OIL TEMP HIGHER THAN NORMAL ON TRAINING FLIGHT. FOUND SMALL AMOUNT OF METAL IN OIL SCREEN. ENGINE REMOVED FOR REPAIR 6-13-95. - [SDR 95ZZZX1684](https://openairdocs.org/sdr/95ZZZX1684), Feb 17, 1995: VALVE. FAILED. EXHAUST VALVE IN THE NR 9 CYLINDER NR 2 ENGINE FAILED CAUSING ENGINE TO RUN ROUGH. FURTHER INVESTIGATION FOUND METAL CONTAMINATION IN THE OIL SUMPS. THESE METAL --- 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.