# N3991C: 1968 Mcdonnell Douglas DC-9-32, registration cancelled 2008-08-04 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: August 4, 2008 - Status when cancelled: Triennial form not returned - Airframe: [Mcdonnell Douglas DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (registry code 302206C) - Engine: [Pratt & Whitney JT8D-15](https://openairdocs.org/engine/pratt-whitney-jt8d-15) (registry code 52051) - Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE), [TCDS E2EA](https://openairdocs.org/tcds/E2EA) (OpenAirDocs) - Serial number: 47175 - Year built: 1968 - Type of aircraft: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: July 23, 1983 - Certificate issued: December 7, 2004 - Last registry action: December 18, 2007 - Mode S code: A4A6B6 - Owner when cancelled: [Northwest Airlines Inc](https://openairdocs.org/faa-owner/NORTHWEST%20AIRLINES%20INC) - Location: [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis) - Owner type: Corporation - Owner's area on the map: 44.8723° N, 93.2328° W: Placed by OpenAirDocs at the center of ZIP code 55450, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N3991C - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3991C - Page: https://openairdocs.org/deregistered/N3991C-2008-08-04 From the FAA registry file of November 7, 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 Mcdonnell Douglas DC-9-32: https://openairdocs.org/model/mcdonnell-douglas-dc-9-32.md ## Service difficulty reports (30) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 0202669942](https://openairdocs.org/sdr/0202669942), Aug 13, 2002: DOOR. OUT OF RIG. RIGHT FORWARD OVERWING EXIT DOOR FELL OPEN DURING LANDING. NO PASSENGERS WERE ON THE AIRCRAFT. THE PLASTIC TRIM PANEL ON THE DOOR CRACKED WHEN THE DOOR FELL OUT - [SDR 0102149942](https://openairdocs.org/sdr/0102149942), Jun 13, 2001: CONTROL VALVE. FAILED. AIRCRAFT LOST PRESSURIZATION AT 35,000 FT. MASKS DEPLOYED AND AIRCRAFT INITIATED AN EMERGENCY DESCENT, DIVERTED TO GFK, AND LANDED WITHOUT INCIDENT. REPLACED TH - [SDR 9810489942](https://openairdocs.org/sdr/9810489942), Oct 12, 1998: SKIN. CRACKED. DURING M-CHECK, FOUND CRACK IN SKIN FASTENER HOLE AT FS 110 BETWEEN LONGERONS 25R AND 26R. REPAIRED PER EA 99-160832. - [SDR 9810499942](https://openairdocs.org/sdr/9810499942), Sep 23, 1998: FRAME. CRACKED. DURING M-CHECK, FOUND CRACK ON FRAME WEB AT FS 1038, INBOARD OF LONGERON 14R, EMITTING FROM UNDER STIFFENER. REPAIRED PER EA 99-162759. - [SDR 9809749942](https://openairdocs.org/sdr/9809749942), Jul 3, 1998: LINE. LEAKING. RIGHT HYDRAULIC SYSTEM QUANTITY AND PRESSURE WENT TO ZERO AFTER TAKEOFF. FLIGHT WAS RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND HYDRAULIC LIN - [SDR 9806229942](https://openairdocs.org/sdr/9806229942), Apr 7, 1998: BATTERY. DISCHARGED. FLIGHT ATTENDANT REPORTED FORWARD FLASHLIGHT INDICATOR NOT FLASHING. REPLACED BATTERY. OPERATIONAL CHECK NORMAL. - [SDR 9805889942](https://openairdocs.org/sdr/9805889942), Mar 27, 1998: EPR INDICATOR. FAILED. AS TAKEOFF POWER WAS APPLIED, THE LEFT ENGINE EPR INDICATION FROZE AT 1.5. CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE LEFT ENGINE E - [SDR 9805039942](https://openairdocs.org/sdr/9805039942), Mar 27, 1998: TRANSMITTER. MALFUNCTIONED. AS TAKEOFF POWER WAS APPLIED, THE LEFT ENGINE EPR INDICATION FROZE AT 1.7. CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE LEFT ENGINE E - [SDR 9722099942](https://openairdocs.org/sdr/9722099942), Nov 24, 1997: BULB. FAILED. NOSE LANDING GEAR GREEN DOWNLOCK LIGHT REMAINED ON AFTER GEAR RETRACTION. FLIGHT WAS CONTINUED TO DESTINATION (MSP) AND LANDED WITHOUT INCIDENT. MAINTENANCE REL - [SDR 9714039942](https://openairdocs.org/sdr/9714039942), Jul 20, 1997: BATTERIES. DISCHARGED. DURING LINE CHECK, FOUND OVERWING EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED BATTERIES. OPERATION CHECKS GOOD. - [SDR 9711959942](https://openairdocs.org/sdr/9711959942), Jun 18, 1997: BATTERY PACKS. DISCHARGED. DURING LINE MAINTENANCE INSPECITON, FOUND SEVERAL EMERGENCY LIGHTS THAT WOULD NOT TEST. REPLACED ALL BATTERY PACKS AT DOOR EXIT SIGNS AND CABIN OVERHEAD. OPERAT - [SDR 9702409942](https://openairdocs.org/sdr/9702409942), Feb 1, 1997: SLIDE BATTERY. DISCHARGED. DURING PERIODIC CHECK, FOUND FORWARD SERVICE DOOR EVACUATION SLIDE FAILED BATTERY TEST. REPLACED SLIDE. - [SDR 9700579942](https://openairdocs.org/sdr/9700579942), Jan 11, 1997: SKIN. CORRODED. DURING PERIODIC CHECK, FOUND CORROSION ON LOWER RIGHT WING BETWEEN WS 111.5 AND 164, STR 15. MADE INTERIM REPAIR PER EA 99-112008. - [SDR 9625819942](https://openairdocs.org/sdr/9625819942), Dec 2, 1996: BATTERIES. DISCHARGED. DURING LINE MAINTENANCE INSPECTION, FOUND MID-CABIN OVERHEAD EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERIES. OPERATIONAL CHECK NORMAL. - [SDR 9625689942](https://openairdocs.org/sdr/9625689942), Nov 30, 1996: BATTERY. DISCHARGED. DURING LINE MAINTENANCE INSPECTION, FOUND LEFT AND RIGHT AFT OVERWING EXIT EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERIES IN PACK, OPERATIONAL CHECK NORMAL. - [SDR 9607539942](https://openairdocs.org/sdr/9607539942), Apr 1, 1996: EGT INDICATOR. FAILED. NR 1 ENGINE EGT INDICATION FAILED IN FLIGHT AND AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE EGT INDICATOR WITH A SERVICEABLE - [SDR 9604799942](https://openairdocs.org/sdr/9604799942), Feb 26, 1996: BATTERY PACK. DISCHARGED. DURING LINE MAINTENANCE INSPECTION, FOUND MID TO AFT CABIN EMERGENCY FLOOR TRACK LIGHTING INOPERATIVE. REPLACED BATTERY PACKS AND OPERATIONAL CHECK NORMAL. - [SDR 9520599942](https://openairdocs.org/sdr/9520599942), Dec 17, 1995: EEL SIGN. BROKEN. DURING LINE CHECK, FOUND AFT DOOR ESCAPE PATH EXIT SIGN BROKEN. REPLACED SIGN AND OPERATIONAL CHECK GOOD. - [SDR 9518729942](https://openairdocs.org/sdr/9518729942), Nov 21, 1995: EEL. INOPERATIVE. DURING LINE CHECK, FOUND FLOOR TRACK EMERGENCY LIGHTS INOPERATIVE. REPLACED DEFECTIVE EMERGENCY LIGHT ASSEMBLY AT FORWARD LEFT DOOR, OPERATIONAL CHECK GOOD. - [SDR 9518739942](https://openairdocs.org/sdr/9518739942), Nov 20, 1995: BATTERY PACK. DISCHARGED. DURING LINE CHECK, FOUND ALL FLOOR EMERGENCY TRACK LIGHTS INOPERATIVE. REPLACED FORWARD POWER SUPPLY, ALL FOUR BATTERY PACKS AND OPERATIONAL CHECK GOOD. - [SDR 9517949942](https://openairdocs.org/sdr/9517949942), Nov 13, 1995: BATTERY PACK. DISCHARGED. DURING LINE CHECK, FOUND THE FLOOR PROXIMITY LIGHTS INOPERATIVE. REPLACED FOUR BATTERY PACKS, OPERATIONAL CHECK GOOD. - [SDR 9510769942](https://openairdocs.org/sdr/9510769942), Jul 11, 1995: DOOR LIGHT. MALFUNCTIONED. DURING CLIMBOUT FROM YUL, LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS RETRACTED. RECYCLED GEAR AND LIGHT EXTINGUISHED. FLIGHT CONTINUED TO MSP AND L - [SDR 9510129942](https://openairdocs.org/sdr/9510129942), Jun 25, 1995: UPLATCH ASSY. LACK OF LUBE. LEFT MAIN GEAR UNSAFE LIGHT REMAINED ON AFTER GEAR WAS RETRACTED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. ADJUSTED TENSION ON LEFT MAIN GEAR UPLATCH - [SDR 9510119942](https://openairdocs.org/sdr/9510119942), Jun 24, 1995: UPLOCK SWITCH. MALFUNCTIONED. LEFT MAIN GEAR UNSAFE LIGHT REMAINED ON AFTER GEAR WAS RETRACTED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT MAIN GEAR UPLOCK SWITCH. - [SDR 9510549942](https://openairdocs.org/sdr/9510549942), Jun 23, 1995: SKIN. CORRODED. DURING PERIODIC CHECK, FOUND CORROSION ON THE LEFT WING LOWER SKIN INTERIOR SURFACE XRS 58-XRS 200, STR 13-23. REPAIRED PER EA 99-100385. - [SDR 9510529942](https://openairdocs.org/sdr/9510529942), Jun 19, 1995: LONGERON. CORRODED. DURING PERIODIC CHECK, FOUND CORROSION ON THE RIGHT WING STR 13-15 AND STR 18-22, XRS 58-69, AND ON THE RIB ATTACH FOOT FITTINGS BETWEEN STR 12-14, XRS 164, AND - [SDR 9509889942](https://openairdocs.org/sdr/9509889942), Jun 7, 1995: FRAME. CRACKED. DURING PERIODIC CHECK, FOUND A CRACK IN FS 598 FRAME AT LONGERON 24L. REPAIRED FRAME (P/N 99-19621-1) PER EA 99-100379. - [SDR 9510509942](https://openairdocs.org/sdr/9510509942), May 28, 1995: SKIN. CRACKED. DURING PERIODIC CHECK, FOUND A .1250 INCH CRACK IN THE UPPER AFT FUSELAGE SKIN AT THE SERVICE DOOR CUTOUT. REPAIRED PER EA 99-097386. - [SDR 9508389942](https://openairdocs.org/sdr/9508389942), May 18, 1995: LONGERON. CRACKED. DURING PERIODIC CHECK, FOUND A CRACK COMPLETELY THROUGH LONGERON 25L AT FS 160. REPAIRED LONGERON PER SRM 53-02, FIG 2. - [SDR 9505629942](https://openairdocs.org/sdr/9505629942), Apr 9, 1995: DOOR. DAMAGED. VIBRATION AND A SMALL 'THUMP' WAS COMING FROM THE NOSE GEAR AREA AFTER TAKEOFF. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. FOUND LEFT NOSE GEAR DOOR BE ## FAA accident and incident reports (3) 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 20010504007559I](https://openairdocs.org/incident/20010504007559I), May 4, 2001: Doug DC932 (N3991C), Pittsburgh, PA. On 05-04-01, nwaa flight #1488, at approximately 2305, local time,reported electrical problems while landing on runway 10L, at pit. Further investigation… - [Incident 19990307017809I](https://openairdocs.org/incident/19990307017809I), Mar 7, 1999: Doug DC932 (N3991C), Bozeman, MT. On March 7, 1999, northwest airlines, flight 1265, minneapolis, Minnesota to Bozeman, Montana with 69 passengers aboard, a DC-9, slide off runway 12 at Bozeman… - [Incident 19870325016579I](https://openairdocs.org/incident/19870325016579I), Mar 25, 1987: Doug DC932 (N3991C), Memphis, TN. Right engine began to compressor stall on climb. Aircraft returned safely. Engine was changed. --- 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.