# N477AU: Fokker F.28 MK4000, registration cancelled 2006-02-03

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 3, 2006
- Exported to: Cameroon
- Status when cancelled: Valid registration
- Airframe: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (registry code 4990810)
- Serial number: 11226
- Type of aircraft: Fixed wing multi engine
- Certificate issued: May 20, 2005
- Last registry action: May 20, 2005
- Mode S code: A5DB2E
- Owner when cancelled: [Amtering Air Inc](https://openairdocs.org/faa-owner/AMTERING%20AIR%20INC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7236° N, 75.5412° W: Placed by OpenAirDocs at the center of ZIP code 19801, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N477AU
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=477AU
- Page: https://openairdocs.org/deregistered/N477AU-2006-02-03

From the FAA registry file of November 5, 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 MK4000: https://openairdocs.org/model/fokker-f-28-mk4000.md

## Service difficulty reports (235, newest 50)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR QXEA0101686](https://openairdocs.org/sdr/QXEA0101686), Oct 15, 2001: BATTERY PACK. DISCHARGED. PDX - LOWER EGRESS LIGHTS ARE INOPERABLE. REMOVED AND REPLACED EGRESS LIGHT BATTERY PACK. OPERATIONAL CHECK IS GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0101432](https://openairdocs.org/sdr/QXEA0101432), Sep 2, 2001: SIGN. INOPERATIVE. BOI - EXIT SIGN AT CABIN ENTRANCE HAS BURNED OUT BULBS. REPLACED EXIT SIGN IAW F-28 MAINTENANCE MANUAL 33-50-00, PAGES 412-413. OPERATIONAL CHECK IS GOOD. AIRCR
- [SDR QXEA0101433](https://openairdocs.org/sdr/QXEA0101433), Sep 2, 2001: SIGN. INOPERATIVE. BOI - BOTH EXIT SIGNS AT MID CABIN HAVE BURNED OUT BULBS. REPLACED EXIT SIGN IAW F-28 MAINTENANCE MANUAL 33-50-00, PAGE 422. OPERATIONAL CHECK IS GOOD. AIRCRAFT
- [SDR QXEA0101431](https://openairdocs.org/sdr/QXEA0101431), Sep 2, 2001: SIGN. INOPERATIVE. BOI - EXIT SIGN ABOVE COCKPIT DOOR HAS BURNED OUT BULBS. REPLACED EXIT SIGN IAW F-28 MAINTENANCE MNANUAL, 33-50-00, PAGES 413-415. OPERATIONAL CHECK IS GOOD. AI
- [SDR QXEA0101348](https://openairdocs.org/sdr/QXEA0101348), Aug 14, 2001: ANGLE. CRACKED. PDX - CRACK IN ANGLE ATTACHED TO FRAME 2948, ADJACENT TO FIREWALL, AND AT THE TOP OF THE STUB WING. REPAIRED IAW THE F-28 STRUCTURAL REPAIR MANUAL 54-02-02, PAG
- [SDR QXEA0101199](https://openairdocs.org/sdr/QXEA0101199), Jul 28, 2001: SKIN. CRACKED. PDX - 1/4 INCH CRACK IN FUSELAGE SKIN. LOCATED UNDER MAIN CABIN DOOR FORWARD OF FRAME 4175. REPAIRED IAW FOKKER SRM 53-02-05, FIGURE 4 AND SRM 51-31-01.
- [SDR QXEA0101198](https://openairdocs.org/sdr/QXEA0101198), Jul 23, 2001: BUTT JOINT. CRACKED. PDX - CRACK ON THE BUTT JOINT ON NR 8 STRINGER, 17 INCHES FORWARD OF FRAME 4850. REPAIRED IAW FOKKER SRM 51-31-01 AND HORIZON AIR EA 4-53-1517.
- [SDR QXEA0101074](https://openairdocs.org/sdr/QXEA0101074), Jun 30, 2001: LIGHT. FALSE ACTIVATION. SEA - FLIGHT CREW REPORTED THAT EMERGENCY LIGHTS ILLUMINATED WITH THE SWITCH IN ARM POSITION. FOUND CORROSION AND BREAKAGE OF WIRES AT ROW 9. REPAIRED AS REQUIR
- [SDR QXEA0100940](https://openairdocs.org/sdr/QXEA0100940), Jun 10, 2001: SIGN. MALFUNCTIONED. PDX- EMERGENCY EXIT SIGNS NR 1, 3, 4 HAVE BURNED OUT LIGHTS. REMOVED AND REPLACED EMERGENCY EXIT SIGNS. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0101043](https://openairdocs.org/sdr/QXEA0101043), Jun 8, 2001: ANGLE. CORRODED. PDX - AT FRAME 4900 AND MAIN ENTRANCE DOOR TORSION BOX CONNECTION ANGLE IS CORRODED AT A HILOCK AND AT AN ADJACENT BOLT HEAT. REPAIRED IAW FOKKER SRM 51-30-02.
- [SDR QXEA0101042](https://openairdocs.org/sdr/QXEA0101042), Jun 8, 2001: ANGLE. CORRODED. PDX - AT FRAME 3820/3870 AND MAIN ENTRANCE DOOR TORSION BOX CONNECTION ANGLE HAS CORROSION AT A RIVE TAIL. REPAIRED IAW FOKKER SRM 51-30-02.
- [SDR QXEA0100625](https://openairdocs.org/sdr/QXEA0100625), Apr 20, 2001: ENGINE. VIBRATION. YYC - ON CLIMBOUT FROM YYC ENGINE VIBRATION AND CABIN FILLED WITH SMOKE. RETURNED TO FIELD. LANDED WITHOUT INCIDENT. REMOVED AND REPLACED ENGINE. OPERATIONAL CH
- [SDR QXEA0100445](https://openairdocs.org/sdr/QXEA0100445), Apr 15, 2001: SIGN. INOPERATIVE. SEA - UPON INSPECTION, FOUND OVERWING EXIT SIGN TO HAVE INOPERATIVE LAMPS. REMOVED AND REPLACED EXIT SIGN. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE
- [SDR QXEA0100438](https://openairdocs.org/sdr/QXEA0100438), Apr 4, 2001: CIRCUIT BOARD. INOPERATIVE. SEA - UPON INSPECTION, FOUND FORWARD EMERGENCY EXIT SIGN INOPERATIVE. REMOVED AND REPLACED EXIT SIGN CIRCUIT BOARD. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED T
- [SDR QXEA0100432](https://openairdocs.org/sdr/QXEA0100432), Mar 28, 2001: LIGHT. INOPERATIVE. SEA - DURING INSPECTION, FOUND EXCAPE PATH LIGHT ON SEAT 3A/B INOPERATIVE. REMOVED AND REPLACED SEAT LIGHT ASSEMBLY OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED T
- [SDR QXEA0100223](https://openairdocs.org/sdr/QXEA0100223), Feb 26, 2001: CIRCUIT BOARD. INOPERATIVE. PDX - FORWARD EMERGENCY EXIT SIGN HAS INOPERATIVE LAMPS. REMOVED AND REPLACED LAMP CIRCUIT BOARD. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0100029](https://openairdocs.org/sdr/QXEA0100029), Jan 18, 2001: BRAKE. MALFUNCTIONED. SEA- LEFT BRAKE FEELS SOFT, ALSO FEELS AS IF ANTI-SKID IS RELEASING PRESSURE TO EARLY DURING LANDING ROLL-OUT. INSPECTED AND FOUND NR 2 BRAKE INEFFECTUAL. REMOV
- [SDR QXEA0100019](https://openairdocs.org/sdr/QXEA0100019), Jan 11, 2001: CIRCUIT BOARD. INOPERATIVE. PDX-MID CABIN EXIT LIGHT FORWARD FACING IS DIM. REMOVED AND REPLACED CIRCUIT CARD ASSEMBLY. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0100018](https://openairdocs.org/sdr/QXEA0100018), Jan 10, 2001: LIGHT. INOPERATIVE. BOI-EMERGENCY EXIT SIGN ABOVE COCKPIT DOOR, 28V LIGHTS INOPERATIVE. REMOVED AND REPLACED EXIT SIGN LIGHT ASSEMBLY. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO
- [SDR QXEA0003150](https://openairdocs.org/sdr/QXEA0003150), Nov 28, 2000: SIGN. MISSING. FAT-EXIT SIGN MOUNTED ON WALL NEXT TO SEAT 8E IS MISSING. REMOVED AND REPLACED EXIT SIGN MOUNTED NEXT TO SEAT 8E. OPERATIONAL CHECK GOOD AIRCRAFT RETURNED TO SE
- [SDR QXEA0002555](https://openairdocs.org/sdr/QXEA0002555), Sep 18, 2000: SPLICE. BROKEN. BOI - EVACUATION LIGHTS AT ROW 5 SEAT E INOPERATIVE. REPAIRED BROKEN WIRE SPLICE. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0002491](https://openairdocs.org/sdr/QXEA0002491), Sep 6, 2000: SIGN. INOPERATIVE. GEG- EXIT SIGN AT ROW 8, 28V LIGHTS INOPERATIVE. REPLACED EXIT SIGN AT ROW 8. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0002161](https://openairdocs.org/sdr/QXEA0002161), Aug 3, 2000: CIRCUIT BOARD. FAILED. SEA - EMERGENCY EXIT LIGHT ABOVE FLIGHT COMPARTMENT DOOR WAS REPORTED INOPERATIVE. REMOVED AND REPLACED EXIT SIGN CIRCUIT BOARD. OPERATIONAL CHECKS GOOD. AIRCRA
- [SDR QXEA0001795](https://openairdocs.org/sdr/QXEA0001795), Jul 5, 2000: SIGN. INOPERATIVE. SEA - EXIT SIGN AT ROW 9, ATTACHED TO SEAT REPORTED BROKEN. REMOVED AND REPLACED SIGN ASSEMBLY. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0001149](https://openairdocs.org/sdr/QXEA0001149), Apr 25, 2000: SIGN. INOPERATIVE. PDX- SEVERAL BULBS OUT IN OVERHEAD EMERGENCY EXIT SIGN AT MID CABIN. REPLACED MID CABIN AFT OVERHEAD EMERGENCY EXIT SIGN. OPERATIONAL CHECKS GOOD. AIRCRAFT RETU
- [SDR QXEA0001131](https://openairdocs.org/sdr/QXEA0001131), Apr 16, 2000: WIRE. BROKEN. BOI - EMERGENCY LIGHT AT SEAT 6B INOPERATIVE. REPAIRED BROKEN WIRE UNDER SEAT 6B. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.
- [SDR QXEA0001110](https://openairdocs.org/sdr/QXEA0001110), Apr 16, 2000: WIRE. BROKEN. BOI - EMERGENCY LIGHT ON SEAT 6 B INOPERATIVE. REPAIRED BROKEN WIRE UNDER SEAT 6 B CUSHION. OPERATIONAL CHECK GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERV
- [SDR QXEA0000429](https://openairdocs.org/sdr/QXEA0000429), Feb 9, 2000: DOOR. OUT OF ADJUST. PDX - AFT EDGE OF MAIN CABIN DOOR WAS NOT WITHIN 1 MM OF FLUSHNESS AS PER FMM 52-10-01. REPAIRED IAW HORIZON AIR EA 4-52-314 AND FOKKER SRM 51-50-0.
- [SDR QXEA0000407](https://openairdocs.org/sdr/QXEA0000407), Feb 8, 2000: FASTENER. MISSING. PDX - FORWARD OF STATION 3870 THERE IS ONE HUCK MISSING ON PATCH ON ROW 1. REPAIRED IAW HORIZON AIR EA 4-53-1012 AND HORIZON AIR EA 4-53-9811.
- [SDR QXEA0000389](https://openairdocs.org/sdr/QXEA0000389), Feb 8, 2000: BRACKET. CORRODED. PDX - BOLT HOLES FOR BRACKET ON AIRCRAFT SHOWED SIGNS OF CORROSION. REPAIRED IAW HORIZON AIR EA 4-53-972 AND EA 4-53-1008.
- [SDR QXEA0000411](https://openairdocs.org/sdr/QXEA0000411), Feb 7, 2000: BUTTON. FAILED. PDX - SERVICE EMERGENCY DOOR FAILED EMERGENCY RELEASE TEST. EMERGENCY RELEASE BUTTON DID NOT RELEASE MECHANISM WHEN ACTUATED. CLEANED AND LUBED.
- [SDR QXEA0000393](https://openairdocs.org/sdr/QXEA0000393), Feb 3, 2000: SKIN. DENTED. PDX - FORWARD CARGO BAY CENTER DOOR LOWER FORWARD CORNER WAS DENTED IN CORNER. REPAIRED IAW HORIZON AIR EA 4-52-311.
- [SDR QXEA0000391](https://openairdocs.org/sdr/QXEA0000391), Feb 3, 2000: SKIN. DENTED. PDX - DENT (1.5 INCH LONG BY 1 WIDE, APPROX .090 DEEP) AT RIVET ON LOWER FUSELAGE, 4.75 AFT OF FRAME 4610 ON STRINGER 7 BUTT JOINT. REPAIRED IAW FOKKER SRM 57-3
- [SDR QXEA0000455](https://openairdocs.org/sdr/QXEA0000455), Feb 2, 2000: SKIN. DENTED. PDX - LEFT-HAND WING INBOARD FLAP TRAILING EDGE LOWER SIDE HAD 4.5 BY 1.5 INCH DENT APPROXIMATELY .045 DEEP WITH DISBONDING. REPAIRED IAW FOKKER SRM 51-70-0, PA
- [SDR QXEA0000452](https://openairdocs.org/sdr/QXEA0000452), Feb 2, 2000: SKIN. DENTED. PDX - LEFT INBOARD FLAP INBOARD TRAILING EDGE TOP SIDE HAD TWO DENTS. FILLED THE DENTS IAW FOKKER SRM 51-70-0, PAGE 13, PARAGRAPH 7C (2), METHOD 1.
- [SDR QXEA0000430](https://openairdocs.org/sdr/QXEA0000430), Feb 2, 2000: SEAT TRACK. CORRODED. PDX - CORROSION AT RIGHT-HAND OUTBOARD SEAT TRACK, OUTBOARD FLANGE BETWEEN FRAME 4900 AND 5305. REPAIRED IAW HORIZON AIR EA 4-53-985 AND FOKKER SRM 51-10-04.
- [SDR QXEA0000408](https://openairdocs.org/sdr/QXEA0000408), Feb 2, 2000: SKIN. DAMAGED. PDX - LEFT-HAND FUSELAGE SKIN HAD A CREASE, 4.5 AFT OF FRAME 5305, BEGINNING 1 UP FROM SKIN EDGE AT LAP JOINT ON STRINGER 17. REPAIRED IAW FOKKER SRM 51-10-04 A
- [SDR QXEA0000392](https://openairdocs.org/sdr/QXEA0000392), Feb 2, 2000: SKIN. DENTED. PDX - DENT IN LEFT-HAND AFT FUSELAGE SKIN, 4.5 BELOW POTABLE WATER SERVICE DOOR AFT CORNER. REPAIRED IAW HORIZON AIR EA 4-53-964.
- [SDR QXEA0000387](https://openairdocs.org/sdr/QXEA0000387), Feb 2, 2000: WINDOW FRAME. CRACKED. PDX - CRACK IN RIGHT-HAND SLIDING WINDOW APERTURE. CRACK WAS VIEWED FROM EXTERIOR AND WAS AT TOP AND APPROXIMATELY 3 INCHES FORWARD FROM AFT UPPER CORNER. REPAI
- [SDR QXEA0000397](https://openairdocs.org/sdr/QXEA0000397), Feb 1, 2000: SKIN. DENTED. PDX - FORWARD CARGO BAY CENTER CARGO DOOR INNER SKIN WAS DENTED IN SEVERAL LOCATIONS. REPAIRED IAW FOKKER SRM 51-31-01 AND SRM 51-31-05.
- [SDR QXEA0000201](https://openairdocs.org/sdr/QXEA0000201), Feb 1, 2000: FITTING. CORRODED. PDX - LEFT UPPER INBOARD LUG OF HORIZONTAL STABILIZER DIRVE FITTING HAS PITTING/CORROSION ON INSIDE FACE. REPAIRED IAW FOKKER SRM 51-10-01.
- [SDR QXEA0000200](https://openairdocs.org/sdr/QXEA0000200), Feb 1, 2000: FITTING. CORRODED. PDX - BOTH RIGHT UPPER LUGS ON HORIZONTAL STABILIZER DRIVE FITTING HAS PITTING/CORROSION ON INSIDE FACES. REPAIRED IAW FOKKER SRM 51-11-01.
- [SDR QXEA0000199](https://openairdocs.org/sdr/QXEA0000199), Feb 1, 2000: FITTING. CORRODED. PDX - HORIZONTAL STABILIZER DRIVE FITTING RIGHT LOWER INBOARD LUG HAS PITTING/CORROSION. REPAIRED IAW FOKKER SRM 51-10-4.
- [SDR QXEA0000197](https://openairdocs.org/sdr/QXEA0000197), Feb 1, 2000: FITTING. GOUGED. PDX - THERE ARE SEVERAL GOUGES ON THE FORWARD LEFT AND RIGHT LUGS OF THE HORIZONTAL STABILIZER DRIVE FITTING. REPAIRED IAW FOKKER SRM 51-10-4.
- [SDR QXEA0000178](https://openairdocs.org/sdr/QXEA0000178), Feb 1, 2000: WEB. CRACKED. PDX - CRACK IN THE WEB BL1380L, LEFT-HAND WHEEL BAY CEILING AREA WHERE 3RD AFT UNION PASSES THROUGH WEB. REPAIRED IAW FOKKER SRM 53-02-04, FIGURE 2.
- [SDR QXEA0000198](https://openairdocs.org/sdr/QXEA0000198), Feb 1, 2000: FITTING. CORRODED. PDX - HORIZONTAL STABILIZER DRIVE FITTING LEFT-HAND LOWER INBOARD LUG HAS PITTING/CORROSION. REPAIRED IAW FOKKER SRM 51-10-01.
- [SDR QXEA0000413](https://openairdocs.org/sdr/QXEA0000413), Jan 31, 2000: FRAME. CRACKED. PDX - FRAME 16060 CASTELLATION AT STRINGER 32 WAS CRACKED. REPAIRED IAW HORIZON AIR EA 4-53-992.
- [SDR QXEA0000406](https://openairdocs.org/sdr/QXEA0000406), Jan 31, 2000: BULKHEAD. DENTED. PDX - SMALL SHARP DENT IN NOSE LANDING GEAR BAY LEFT-HAND SIDE WALL, BELOW FORWARD ACM MOUNT. REPAIRED IAW FOKKER SRM 53-02-01, PAGE 3.
- [SDR QXEA0000404](https://openairdocs.org/sdr/QXEA0000404), Jan 31, 2000: FRAME. CHAFED. PDX - CHAFING ON FRAME OUTBOARD OF PANEL 23A APERTURE. REPAIRED IAW FOKKER SRM 51-10-4, PARAGRAPH 4C.
- [SDR QXEA0000456](https://openairdocs.org/sdr/QXEA0000456), Jan 30, 2000: RIB. CORRODED. PDX - RIGHT-HAND WING FLAP COVE, VERTICAL RIB IS CORRODED AT LOWER END, AFT EDGE, RIB IS LOCATED UNDER PANEL 82U. REPAIRED IAW FOKKER SRM 51-10-4 AND SRM 51-11-

All 235: https://openairdocs.org/deregistered/N477AU-2006-02-03/reports.md

## 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 SEA99IA045](https://openairdocs.org/ntsb/SEA99IA045), Apr 1, 1999: Fokker F.28 MK 4000 (N477AU), Spokane, WA, incident, no damage. Probable cause: A chafed hydraulic line.

## FAA accident and incident reports (1)

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 19990331020959I](https://openairdocs.org/incident/19990331020959I), Mar 31, 1999: Fokker F28MK0100 (N477AU), Spokane, WA. (-5) Flap motor hydraulic frayed. Ridgid line chaffed. Line replaced with temporary hose. Checked okay. Deferred temporary repair.

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