# N850US: 1989 Fokker F.28 MK 0100, registration cancelled 2003-05-28 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: May 28, 2003 - Exported to: Netherlands - Status when cancelled: Valid registration - Airframe: [Fokker F.28 MK 0100](https://openairdocs.org/model/fokker-f-28-mk-0100) (registry code 4990807) - Serial number: 11276 - Year built: 1989 - Type of aircraft: Fixed wing multi engine - Airworthiness: Standard, transport - Airworthiness date: August 31, 1989 - Certificate issued: April 14, 2003 - Last registry action: April 14, 2003 - Mode S code: ABA92B - Owner when cancelled: [Wilmington Trust Co Trustee](https://openairdocs.org/faa-owner/WILMINGTON%20TRUST%20CO%20TRUSTEE) - Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington) - Owner type: Corporation - Owner's area on the map: 39.7357° N, 75.5321° W: Placed by OpenAirDocs: center of Wilmington, DE, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N850US - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=850US - Page: https://openairdocs.org/deregistered/N850US-2003-05-28 From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe. ADs and bulletins for the Fokker F.28 MK 0100: https://openairdocs.org/model/fokker-f-28-mk-0100.md ## Service difficulty reports (18) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR USAAF01066](https://openairdocs.org/sdr/USAAF01066), Aug 22, 2001: RELAY. FAULTY. PHL - FLT 2249 - EN-ROUTE MHT-PHL, THE EMERGENCY EXIT LIGHTS WOULDN'T ILLUMINATE WHEN THE LANDING GEAR WAS EXTENDED. MAINTENANCE REPLACED EXIT LIGHTING RELAY K2 - [SDR USAA001046](https://openairdocs.org/sdr/USAA001046), Jul 17, 2000: SKIN. DAMAGED. PIT - FOUND TWO HOLES IN SKIN .75 INCH BY .5 INCH AND .5 INCH BY .25 INCH, RT SIDE STATION 29959 AFT OF APU EXHAUST. REPAIRED PER SRM 53-00-02, INSTALLED REPAIR - [SDR USAA001047](https://openairdocs.org/sdr/USAA001047), Jul 17, 2000: SKIN. DAMAGED. PIT - FOUND A HOLE IN SKIN .5 INCH BY .375 INCH, STATION 28868 RT SIDE AFT OF APU EXHAUST. REMOVED DOUBLER, FABRICATED NEW DOUBLER PER SRM 53-00-02. (M) - [SDR USAAF98073](https://openairdocs.org/sdr/USAAF98073), Sep 8, 1998: INVERTER. INOPERATIVE. IND - LOW LEVEL EMERGENCY FLOOR LIGHTS INOPERATIVE AFT OF ROW 16. MAINTENANCE REPLACED THE 6 VOLT INVERTER AND TWO BATTERY PACKS. (M) - [SDR 98ZZZM696](https://openairdocs.org/sdr/98ZZZM696), Sep 8, 1998: BATTERY PACK. DISCHARGED. IND - LOW LEVEL EMERGENCY FLOOR LIGHTS INOPERATIVE AFT OF ROW 16. MAINTENANCE REPLACED THE 6 VOLT INVERTER AND TWO BATTERY PACKS. (M) - [SDR USAAF98030](https://openairdocs.org/sdr/USAAF98030), Mar 22, 1998: BATTERY PACK. DISCHARGED. IND - MAINTENANCE FOUND TWO INOPERATIVE CEILING EMERGENCY LIGHTS IN MID CABIN. MAINTENANCE REPLACED THE BATTERY PACK. (M) - [SDR USAAF98005](https://openairdocs.org/sdr/USAAF98005), Jan 13, 1998: SWITCH. FAILED. PIT - FLT 670 - ON TAKEOFF, THE LANDING GEAR WOULD NOT COME UP. OVERRIDE WAS USED AND GEAR CAME UP. TAKEOFF CONFIGURATION RED WARNING MESSAGE. THEN FLT/GRD CONF - [SDR USAAF97047](https://openairdocs.org/sdr/USAAF97047), May 25, 1997: POWER SUPPLY. FAILED. IND - FOUND AISLE EMERGENCY LIGHTS AT ROWS 4 AND 5 INOPERATIVE. MAINTENANCE REPLACED THE BATTERY PACK POWER SUPPLY. (M) - [SDR USAAF97008](https://openairdocs.org/sdr/USAAF97008), Jan 25, 1997: SYNCHRONIZER. FAILED. FLT 271 - RIC-LGA - AFTER TAKEOFF, FLAPS WOULD NOT RETRACT PAS 8 DEGREES. NO EMERGENCY WAS DECLARED. FLIGHT RETURNED TO RIC WITHOUT FURTHER INCIDENT. MAINTENANC - [SDR USAAF96103](https://openairdocs.org/sdr/USAAF96103), Oct 4, 1996: CONTROLLER. FAILED. AVL-CLT - FLT 1062 - AFTER TAKEOFF, NR 1 AUTOPRESSURE FAILED. NR 2 AUTOPRESSURE WAS ON MEL. CAPTAIN WENT TO MANUAL AND WAS UNABLE TO CONTROL PRESSURE. FLIGHT CL - [SDR 96ZZZM1475](https://openairdocs.org/sdr/96ZZZM1475), Oct 4, 1996: RELAY. FAILED. AVL-CLT - FLT 1062 - AFTER TAKEOFF, NR 1 AUTOPRESSURE FAILED. NR 2 AUTOPRESSURE WAS ON MEL. CAPTAIN WENT TO MANUAL AND WAS UNABLE TO CONTROL PRESSURE. FLIGHT CL - [SDR 96ZZZM1474](https://openairdocs.org/sdr/96ZZZM1474), Oct 4, 1996: OUTFLOW VALVE. FAILED. AVL-CLT - FLT 1062 - AFTER TAKEOFF, NR 1 AUTOPRESSURE FAILED. NR 2 AUTOPRESSURE WAS ON MEL. CAPTAIN WENT TO MANUAL AND WAS UNABLE TO CONTROL PRESSURE. FLIGHT CL - [SDR USAAF96053](https://openairdocs.org/sdr/USAAF96053), May 28, 1996: COALESCER BAG. CONTAMINATED. CLT - FLT 1543 - DURING CLIMB-OUT OF CLT, BOTH LAVATORY SMOKE DETECTORS ACTIVATED IN AIRCRAFT. CAPTAIN DECLARED EMERGENCY AND RETURNED TO FIELD IN CLT. FLIGHT L - [SDR USAAF96010](https://openairdocs.org/sdr/USAAF96010), Jan 18, 1996: OUTFLOW VALVE. DEACTIVATED. PIT - AFTER TAKEOFF, AIRCRAFT WOULD NOT PRESSURIZE IN AUTOMATIC OR MANUAL MODES. FLIGHT RETURNED TO PIT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REACTIV - [SDR USAAF96005](https://openairdocs.org/sdr/USAAF96005), Jan 8, 1996: APU. FAILED. CRW - FL 7007 - EN ROUTE TYS-PIT - CABIN ALTITUDE BEGAN CLIMBING AND WAS UNCONTROLLABLE. CREW DESCENDED AND DIVERTED TO CRW. BOTH PACKS WERE REPORTED AS OPERATI - [SDR USAA951006](https://openairdocs.org/sdr/USAA951006), Sep 21, 1995: AIR DISTR. ODOR. CLT - FL 1112 - DURING TAKEOFF GROUND ROLL, CREW NOTED SMELL OF BURNING RUBBER. CREW LEFT GEAR DOWN, SMELL DID NOT DISSIPATE. CREW DECLARED AN EMERGENCY, DUMPED - [SDR USAA950210](https://openairdocs.org/sdr/USAA950210), Mar 4, 1995: EEL WIRING. LOOSE. PIT - THE EMERGENCY CENTER CABIN OVERWING STANDBY LIGHT WAS INOPERATIVE. MAINTENANCE REPAIRED A LOOSE CONNECTION ON WIRING TO THE LIGHT. OPERATIONS CHECKED GOOD - [SDR USAA950217](https://openairdocs.org/sdr/USAA950217), Feb 26, 1995: FUEL SYS. VENTING. CLT - FLT NR 0330 - ON TAKEOFF, THE LEFT AND RIGHT WINGS WERE OBSERVED TO HAVE FUEL VENTING FROM THEM. FLIGHT RETURNED TO CLT WITHOUT INCIDENT. MAINTENANCE ACCO ## NTSB investigations (1) 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 ATL91IA017](https://openairdocs.org/ntsb/ATL91IA017), Nov 11, 1990: Fokker F28 MK0100 (N850US), Atlanta, GA, incident, no damage. Probable cause: FROZEN MOISTURE IN THE STABILIZER ACTUATOR HYDRAULIC SERVO VALVE WHICH RESULTED IN REDUCED MOVEMENT OF THE SERVO VALVE AND LIMITED ITS ABILITY TO RESPOND TO FLIGHT CONTROL INPUTS. THE LACK OF… ## FAA accident and incident reports (4) 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. - [Incident 19970407012699I](https://openairdocs.org/incident/19970407012699I), Apr 7, 1997: Fokker F28MK0100 (N850US), Philadelphia, PA, Minor damage. Narrative: us airways flight 1446 departed bos enroute to phl on 4/7/97. The crew noted in the aircraft's log that "left lg downlock switch" fault indicated on… - [Incident 19901111057209I](https://openairdocs.org/incident/19901111057209I), Nov 11, 1990: Fokker F28MK4000 (N850US), Atlanta, GA. On descent computer fault light and stabilizer trim fault lights came on. Autopilot disengaged. - [Incident 19901029062839I](https://openairdocs.org/incident/19901029062839I), Oct 29, 1990: Fokker F28MK0100 (N850US), Erie, PA. During departure from gate the tail touched tail of adjacent DC9. Returned to gate. - [Incident 19900902047949I](https://openairdocs.org/incident/19900902047949I), Sep 2, 1990: Fokker F28MK0100 (N850US), Syracuse, NY. Precautionary landing when hydraulic system for stabilator failed. Replaced sticking switches and alternate motor. --- 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.