# N90S: 1969 Douglas DC-9-31, registration cancelled 2012-08-16 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: August 16, 2012 - Status when cancelled: Valid registration - Airframe: [Douglas DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (registry code 3022065) - Engine: [Pratt & Whitney JT8D-1](https://openairdocs.org/engine/pratt-whitney-jt8d-1) (registry code 52044) - Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE), [TCDS E2EA](https://openairdocs.org/tcds/E2EA) (OpenAirDocs) - Serial number: 47244 - Year built: 1969 - Type of aircraft: Fixed wing multi engine - Engine type: Turbo-jet - Airworthiness: Standard, transport - Airworthiness date: May 16, 1969 - Certificate issued: December 31, 2009 - Last registry action: December 31, 2009 - Mode S code: AC6E63 - Owner when cancelled: [Delta Air Lines Inc](https://openairdocs.org/faa-owner/DELTA%20AIR%20LINES%20INC) - Location: [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta) - Owner type: Corporation - Owner's area on the map: 33.6604° N, 84.3865° W: Placed by OpenAirDocs at the center of ZIP code 30354, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N90S - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=90S - Page: https://openairdocs.org/deregistered/N90S-2012-08-16 From the FAA registry file of October 28, 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 Douglas DC-9-31: https://openairdocs.org/model/douglas-dc-9-31.md ## Service difficulty reports (35) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 0301549931](https://openairdocs.org/sdr/0301549931), Aug 9, 2003: FLEX LINE. LEAKING. UPON GEAR EXTENSION FOR LANDING, THE RT HYDRAULIC SYS FLUID QUANTITY WENT TO ZERO. LANDING GEAR LOCKED DOWN AND SAFE WITH NO FURTHER PROBLEMS. AUXILIARY HYD PUM - [SDR 0204139931](https://openairdocs.org/sdr/0204139931), Dec 14, 2002: SWITCH. INOPERATIVE. ON CLIMBOUT ALL THREE (GEAR UNSAFE) LIGHTS ILLUMINATED. ALL OTHER INDICATIONS NORMAL. ON GEAR EXTENSION GOT ALL GREEN LIGHTS ILLUMINATED AND (GEAR UNSAFE) LIGHT - [SDR 0203039931](https://openairdocs.org/sdr/0203039931), Jul 18, 2002: SKIN. CRACKED. During Hck in ATL, a .125 crack was found on the RH skin adjacent to the wiper cutout area. Repaired per EA 99-190551. - [SDR 0203029975](https://openairdocs.org/sdr/0203029975), Jul 15, 2002: ANGLE. CRACKED. During Hck in ATL Maintenance Base, the LH side of the verticle stabilizer attach angle (aft) was found cracked at station 1100. Repaired per EA 99-190557. - [SDR 0203009931](https://openairdocs.org/sdr/0203009931), Jul 9, 2002: FRAME. CRACKED. During HCK in ATL, frames station 389 and 408 were found cracked at longeron 17. Repaired per EA 99-190536. - [SDR 0103779931](https://openairdocs.org/sdr/0103779931), Oct 30, 2001: DUCT. BLOWN. DURING CLIMBOUT AND UPON REACHING CRUISE ALTITUDE, THE CABIN CONTINUED TO CLIMB. CREW REQUESTED TO DEPART FL240 AND DESCENDED TO 9000 FT FOR THE DURATION OF THE - [SDR 0004289931](https://openairdocs.org/sdr/0004289931), Nov 3, 2000: LAMP. INOPERATIVE. DURING LINE CHECK, FOUND EMERGENCY LIGHTS ABOVE TAILCONE SLIDE INOPERATIVE. MAINTENANCE REPLACED THE LAMP. OPERATIONAL CHECK NORMAL. - [SDR 9808049931](https://openairdocs.org/sdr/9808049931), Apr 29, 1998: ROD END. BROKEN. DURING APPROACH, SLAT DISAGREEMENT LIGHT ILLUMINATED WITH AIRCRAFT ROLL OF APPROXIMATELY 20 DEGREES ON SLAT EXTENSION. MAINTENANCE FOUND LEFT LOWER SLAT DRIVE C - [SDR 9807729931](https://openairdocs.org/sdr/9807729931), Apr 29, 1998: BATTERIES. DISCHARGED. DURING LINE MAINTENANCE INSPECTION, FOUND AFT OVERWING EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED BATTERIES. OPERATIONAL CHECK NORMAL. - [SDR 9806929931](https://openairdocs.org/sdr/9806929931), Apr 20, 1998: T-DUCT. CRACKED. DURING APPROACH, SLAT DISAGREEMENT LIGHT ILLUMINATED WITH ROLL TO THE RIGHT. CREW RECYCLED SLATS WITH SAME RESULTS. FLIGHT WAS RETURNED TO DTW AND LANDED WITHOU - [SDR 9806219931](https://openairdocs.org/sdr/9806219931), Apr 8, 1998: POWER SUPPLY. INOPERATIVE. DURING LINE MAINTENANCE INSPECTION, FOUND AFT OVERHEAD EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY AND BATTERIES. OPERATIONAL CHECK NORMAL. - [SDR 9804949931](https://openairdocs.org/sdr/9804949931), Mar 24, 1998: BATTERY. DISCHARGED. DURING PERIODIC CHECK, MAIN CABIN DOOR EVACUATION SLIDE FAILED BATTERY TEST. REPLACED SLIDE. - [SDR 9803349931](https://openairdocs.org/sdr/9803349931), Feb 25, 1998: POWER SUPPLY. INOPERATIVE. DURING PERIODIC CHECK, FOUND RIGHT AND LEFT OVERWING EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED THE POWER SUPPLY. OPERATIONAL CHECK NORMAL. - [SDR 9803899931](https://openairdocs.org/sdr/9803899931), Feb 14, 1998: BULKHEAD DOUBLER. CRACKED. DURING AFT PRESSURE BULKHEAD INSPECTION, FOUND CRACKS IN THE -71 DOUBLER AT THE AFT PRESSURE BULKHEAD UPPER DOOR CUTOUT. REPAIRED PER EA 99-154161. - [SDR 9803889931](https://openairdocs.org/sdr/9803889931), Feb 14, 1998: BULKHEAD SKIN. CRACKED. DURING AFT PRESSURE BULKHEAD INSPECTION, FOUND CRACK IN THE AFT PRESSURE BULKHEAD SKIN AT THE UPPER DOOR CUTOUT 11.5 RIGHT OF CENTER LINE. REPAIRED PER EA 99-15 - [SDR 9803919931](https://openairdocs.org/sdr/9803919931), Feb 9, 1998: BULKHEAD DOUBLER. CRACKED. DURING AFT PRESSURE BULKHEAD INSPECTION, FOUND CRACKS IN THE AFT PRESSURE BULKHEAD UPPER DOOR CUTOUT -13 DOUBLER. REPAIRED PER EA 99-154161. - [SDR 9803909931](https://openairdocs.org/sdr/9803909931), Feb 9, 1998: BULKHEAD DOUBLER. CRACKED. DURING AFT PRESSURE BULKHEAD INSPECTION, FOUND CRACK IN THE -9 DOUBLER AT THE AFT PRESSURE BULKHEAD UPPER DOOR CUTOUT. REPAIRED PER EA 99-154161. - [SDR 9803879931](https://openairdocs.org/sdr/9803879931), Jan 15, 1998: BULKHEAD SKIN. CRACKED. DURING AFT PRESSURE BULKHEAD INSPECTION, FOUND CRACK IN THE AFT PRESSURE BULKHEAD SKIN AT THE UPPER DOOR CUTOUT 1.75 CENTER LINE. REPAIRED PER EA 99-154161. - [SDR 9722499931](https://openairdocs.org/sdr/9722499931), Nov 26, 1997: SLIDE. LOW PRESSURE. DURING LINE MAINTENANCE INSPECTION, FOUND TAIL CONE EVACUATION SLIDE LOW ON PRESSURE. REPLACED SLIDE, CHECKED OK. - [SDR 9718549931](https://openairdocs.org/sdr/9718549931), Oct 2, 1997: OIL TEMP IND. FAILED. DURING CLIMB, THE RIGHT ENGINE OIL TEMPERATURE INDICATION ENTERED THE CAUTION RANGE. CREW RETURNED TO JFK AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLA - [SDR 9710259931](https://openairdocs.org/sdr/9710259931), May 23, 1997: BATTERIES. DISCHARGED. DURING LINE MAINTENANCE INSPECTION, FOUND OVERHEAD EMERGENCY LIGHTS BETWEEN AFT LAVATORIES AND VENTRAL STAIRS INOPERATIVE. REPLACED BATTERIES, OPERATIONAL CHECK - [SDR 9625629931](https://openairdocs.org/sdr/9625629931), Nov 30, 1996: SWITCH. MALFUNCTIONED. LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR RETRACTION. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RIGHT MAIN GEAR DOOR SW - [SDR 9625619931](https://openairdocs.org/sdr/9625619931), Nov 28, 1996: SWITCH STRIKER. OUT OF ADJUST. LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR RETRACTION. RECYCLED GEAR WITH NO HELP. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE ADJU - [SDR 9625589931](https://openairdocs.org/sdr/9625589931), Nov 28, 1996: SWITCH. DIRTY. LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR RETRACTION. COCKPIT OPERATING MANUAL PROCEDURES WERE FOLLOWED AND AIRCRAFT CONTINUED TO DESTINATION. AIRCRAF - [SDR 9619879931](https://openairdocs.org/sdr/9619879931), Sep 15, 1996: FLAP POS IND. FAILED. AFTER TAKEOFF AND UPON FLAP RETRACTION, THE LEFT FLAP INDICATED FULL RETRACTION WITH RIGHT FLAP INDICATING 15 DEGREES. FLIGHT RETURNED TO MSP AND LANDED WITHOUT - [SDR 9619339931](https://openairdocs.org/sdr/9619339931), Aug 30, 1996: O-RING. BROKEN. RIGHT HYDRAULIC SYSTEM QUANTITY DECREASED TO ONE QUART EN ROUTE. WHEN RIGHT PUMPS WERE TURNED OFF, QUANTITY INCREASED TO FIFTEEN QUARTS. FLIGHT DIVERTED TO MCI - [SDR 9618799931](https://openairdocs.org/sdr/9618799931), Aug 26, 1996: RETRACT MECH. OUT OF ADJUST. DURING APPROACH, LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS EXTENDED. GO-AROUND PROCEDURES WERE EXECUTED AND TOWER VISUALLY CONFIRMED THAT GEAR WAS - [SDR 9618539931](https://openairdocs.org/sdr/9618539931), Aug 25, 1996: VALVE. MALFUNCTIONED. DURING APPROACH, THE LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS EXTENDED. GO-AROUND PROCEDURES WERE EXECUTED AND GEAR WAS RECYCLED. DOOR OPEN LIGHT - [SDR 9618419931](https://openairdocs.org/sdr/9618419931), Aug 25, 1996: BATTERY PACKS. DISCHARGED. DURING PERIODIC CHECK, FOUND CABIN EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACKS, OPERATIONAL CHECK NORMAL. - [SDR 9619039931](https://openairdocs.org/sdr/9619039931), Aug 23, 1996: PRESSURE PANEL. CRACKED. DURING H-CHECK, FOUND A CRACK IN THE NOSE LANDING GEAR WHEEL WELL HORIZONTAL PRESSURE PANEL AT FS 83, RIGHT SIDE. REPAIRED PANEL (P/N 9910073-3) PER EA 99-11075 - [SDR 9618109931](https://openairdocs.org/sdr/9618109931), Aug 17, 1996: FITTING. CRACKED. DURING H-CHECK, FOUND CRACKS IN THE AFT CARGO DOOR BEAM END FITTING, SECOND FROM BOTTOM ON BOTH THE FORWARD AND AFT ENDS AND THE THIRD FROM THE TOP FORWARD END. - [SDR 9615619931](https://openairdocs.org/sdr/9615619931), Jul 15, 1996: BATTERY PACK. DISCHARGED. DURING LINE MAINTENANCE INSPECTION, FOUND RIGHT NACELLE EMERGENCY LIGHT INOPERATIVE. REPLACED BATTERY PACK, OPERATIONAL CHECK NORMAL. - [SDR 9604619931](https://openairdocs.org/sdr/9604619931), Feb 23, 1996: DOOR SWITCH. FAILED. LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS RETRACTED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT MAIN GEAR DOOR SWITCH A - [SDR 9519169931](https://openairdocs.org/sdr/9519169931), Nov 7, 1995: TRACK. CRACKED. DURING LINE CHECK, FOUND A CRACK IN THE LEFT TRAILING EDGE FLAP TRACK WEB AFT INBOARD END. REPAIRED PER EA 98-105026. - [SDR 9514349931](https://openairdocs.org/sdr/9514349931), Sep 16, 1995: OIL TEMP SENSOR. MALFUNCTIONED. MSP - DURING CLIMBOUT, NR 2 ENGINE OIL TEMPERATURE INDICATION EXCEEDED RECOMMENDED LIMITS AND THEN BECAME UNSTABLE. FLIGHT RETURNED TO MSP LANDING WITHOUT INCID ## FAA accident and incident reports (6) 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 19960831034199I](https://openairdocs.org/incident/19960831034199I), Aug 31, 1996: Doug DC931 (N90S), Kansas City, MO. Narrative: on 8/30/96, northwest flight 410 was enroute to msp from dfw, when the flight crew noticed a decrease in the hydraulic fluid quantity on the right… - [Incident 19851024061579I](https://openairdocs.org/incident/19851024061579I), Oct 24, 1985: Doug DC931 (N90S), Milwaukee, WI. While at cruise, the captain suffered an incapaciting seizure. Safe diversion and landing made by first officer. - [Incident 19841002058049I](https://openairdocs.org/incident/19841002058049I), Oct 2, 1984: Doug DC931 (N90S), Grand Rapids, MI, Substantial damage. Aborted takeoff because of right engine overtemp and turbine failure. - [Incident 19840212010949I](https://openairdocs.org/incident/19840212010949I), Feb 12, 1984: Doug DC931 (N90S), Oshkosh, WI, Minor damage. Departed end of runway on landing rollout. Hydroplaning claimed by pilot. Landing gear damaged. - [Incident 19801230088219I](https://openairdocs.org/incident/19801230088219I), Dec 30, 1980: Doug DC931 (N90S), Green Bay, WI. Nose wheel slid off snow and ice covered runway. - [Incident 19800414050719I](https://openairdocs.org/incident/19800414050719I), Apr 14, 1980: Doug DC931 (N90S), Milwaukee, WI, Minor damage. Experienced lightning strike on descent. --- 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.