# N491SA: 1966 Douglas DC9-15, registration cancelled 2005-06-02

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 2, 2005
- Exported to: South Africa
- Status when cancelled: Triennial form not returned
- Airframe: [Douglas DC9-15](https://openairdocs.org/model/douglas-dc9-15) (registry code 3022036)
- 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: 45799
- Year built: 1966
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-jet
- Airworthiness: Standard, transport
- Airworthiness date: November 29, 1966
- Certificate issued: August 23, 1999
- Last registry action: August 20, 2002
- Mode S code: A61560
- Owner when cancelled: [Capital Aircraft Inc](https://openairdocs.org/faa-owner/CAPITAL%20AIRCRAFT%20INC)
- Location: [Springfield, IL](https://openairdocs.org/faa-place/IL/Springfield)
- Owner type: Corporation
- Owner's area on the map: 39.8555° N, 89.6501° W: Placed by OpenAirDocs at the center of ZIP code 62707, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N491SA
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=491SA
- Page: https://openairdocs.org/deregistered/N491SA-2005-06-02

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 Douglas DC9-15: https://openairdocs.org/model/douglas-dc9-15.md

## Service difficulty reports (16)

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

- [SDR TWAA9812701](https://openairdocs.org/sdr/TWAA9812701), Aug 5, 1998: LIGHT. LOOSE. THE FIRST CLASS AND FWD SECTION OF COACH HAD EGRESS LIGHTING INOPERATIVE. FOUND POWER FEEDER LEAD LOOSE. RESECURED CONNECTOR. CHECK-C 3-12-98 STL.
- [SDR TWAA9810310](https://openairdocs.org/sdr/TWAA9810310), Jun 23, 1998: FRAME. CRACKED. STL - ON LT Z14 RADIAL OTBD LOWER HOLE ON THE FORWARD SIDE, A .25 INCH CRACK WAS INDICATED BY EDDY CURRENT IN THE ATTACH ANGLE. REPAIRED PER ARA 15188. CHECK-C 
- [SDR TWAA9810309](https://openairdocs.org/sdr/TWAA9810309), Jun 21, 1998: FRAME. CRACKED. STL - FOUND LT Z14 RADIAL OTBD UPPER HOLE ON THE FORWARD SIDE WITH .3750 INCH CRACK INDICATION BY EDDY CURRENT. REMOVED AND REPLACED END CLIP PER SRM 51-30-5, A
- [SDR TWAA9810308](https://openairdocs.org/sdr/TWAA9810308), Jun 21, 1998: FITTING. CRACKED. STL - FOUND UPPER END FITTING ON AFT PRESSURE BULKHEAD RT Z34 RADIAL CRACKED .1250 INCH AT TEE FITTING. REPAIRED PER ARA 15188. CHECK-C 3-12-98 STL. ACFT TT: 66
- [SDR TWAA9810307](https://openairdocs.org/sdr/TWAA9810307), Jun 21, 1998: FRAME. CRACKED. STL - THE RT Z34 RADIAL WAS CRACKED ON END ABOUT 1 INCH. REPAIRED PER ARA 15188. CHECK-C 3-12-98 STL. ACFT TT: 66,639 HOURS. ACFT TC: 80,202. (X)
- [SDR TWAA9810306](https://openairdocs.org/sdr/TWAA9810306), Jun 21, 1998: FRAME. CRACKED. STL - THE RT Z34 RADIAL OUTBOARD LOWER HOLE ON FORWARD SIDE SHOWED CRACK INDICATION BY EDDY CURRENT. REPAIRED PER ARA 15188. CHECK-C 3-12-98 STL. ACFT TT: 66,63
- [SDR TWAA9810315](https://openairdocs.org/sdr/TWAA9810315), Jun 20, 1998: BULKHD FITTING. CRACKED. STL - THE UPPER END FITTING ON AFT PRESSURE BULKHEAD LT Z24 RIB WAS CRACKED AT TEE FITTING. REMOVED AND REPLACED END FITTING PER ARA 15188. CHECK-C 3-12-98 STL.
- [SDR TWAA9810312](https://openairdocs.org/sdr/TWAA9810312), Jun 20, 1998: BULKHEAD SKIN. CRACKED. STL - FOUND BULKHEAD SKIN CRACKED .25 INCH AT LT BULKHEAD AT Z24L, ON OTBD TOP SIDE, SECOND HOLE FORM END. REPAIRED SKIN PER ARA 15189. CHECK-C 3-12-98 STL. ACF
- [SDR TWAA9810305](https://openairdocs.org/sdr/TWAA9810305), Jun 20, 1998: FRAME. CRACKED. STL - THE LT Z24 RADIAL, UPPER INBD HOLE ON THE FORWARD SIDE SHOWED CRACK INDICATION BY EDDY CURRENT. REMOVED AND REPLACED FITTING PER ARA 15188. CHECK-C 3-12-9
- [SDR TWAA9810311](https://openairdocs.org/sdr/TWAA9810311), Jun 19, 1998: FRAME. CRACKED. STL - ON THE LT Z34 RADIAL UPPER OTBD HOLE ON THE FORWARD SIDE, A CRACK INDICATION WAS SHOWN BY EDDY CURRENT. REPAIRED PER TWA ARA 15188. CHECK-C 3-12-98 STL. A
- [SDR TWAA9810314](https://openairdocs.org/sdr/TWAA9810314), Jun 18, 1998: BULKHD FITTING. CRACKED. STL - THE LOWER END FITTING ON AFT PRESSURE BULKHEAD LT Z34 RIB HAD A .3750 INCH CRACK AT TEE FITTING. REPAIRED PER TWA ARA 15188. CHECK-C 3-12-98 STL. (X)
- [SDR TWAA9810313](https://openairdocs.org/sdr/TWAA9810313), Jun 18, 1998: FRAME. CRACKED. STL - THE Z48 RADIAL FORMER RT SIDE WAS FOUND CRACKED 1 INCH LONG ON OTBD END. REPAIRED FORMER PER ARA 15188. CHECK-C 3-12-98 STL. ACFT TT: 66,639 HOURS. ACFT T
- [SDR TWAA9808603](https://openairdocs.org/sdr/TWAA9808603), May 29, 1998: BATTERY PACK. DISCHARGED. STL - FLT 404 - EMERGENCY EXIT SIGNS AT R1 AND L1 DOORS CAME ON IN FLIGHT. WOULD NOT RESET UNTIL SHORT FINAL. REPLACED FWD EMERGENCY EXIT SIGN BATTERY PACK. (M)
- [SDR TWAA9714102](https://openairdocs.org/sdr/TWAA9714102), Dec 1, 1997: FIRE LOOP. FAILED. MCI - FLT 588 - DURING FLIGHT, RIGHT ENGINE FIRE WARNING LIGHT FLICKERED. REPLACED THE LOWER FIRE DETECTOR LOOP ASSY. (M)
- [SDR TWAA9713701](https://openairdocs.org/sdr/TWAA9713701), Nov 21, 1997: RETRACT MECH. MALFUNCTIONED. STL - FLT 218 - AT 14,000 DURING DESCENT INTO STL, FLAPS UNCOMMANDED DEPLOYED TOWARD 10DGR AT 300 KTS, WITHIN 5 SECONDS WERE PLACED TO UP. ACCOMPLISHED CHECKS P
- [SDR 96ZZZX3023](https://openairdocs.org/sdr/96ZZZX3023), May 15, 1996: BATTERY PACK. DISCHARGED. STL - FLT 619 - DURING PRE-FLIGHT, EMERGENCY LIGHTS AND EGRESS LIGHTS WOULD NOT ILLUMINATE. FOUND SWITCH HAD BEEN LEFT IN THE ON POSITION. REPLACED BATTERY POWE

## FAA accident and incident reports (7)

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 19930915036499I](https://openairdocs.org/incident/19930915036499I), Sep 15, 1993: Doug DC915 (N491SA), Wichita, KS. Pilot unable to reduce power on left engine. Shut engine down. Landed at Wichita. Throttle system jammed.
- [Incident 19900120005099I](https://openairdocs.org/incident/19900120005099I), Jan 20, 1990: Doug DC915 (N491SA), Cedar Rapids, IA. Aircraft skidded on ice when crew attempted to line up on center line. Returned to gate while runway sanded.
- [Incident 19880827055799I](https://openairdocs.org/incident/19880827055799I), Aug 27, 1988: Doug DC915 (N491SA), St Louis, MO. Lost pressurization inflight. Landed at St Louis. Found left water separator duct off.
- [Incident 19880124013379I](https://openairdocs.org/incident/19880124013379I), Jan 24, 1988: Doug DC915 (N491SA), Waterloo, IA. Made a landing with reported weather conditions below landing minimums. Caused by blowing snow.
- [Incident 19870627039759I](https://openairdocs.org/incident/19870627039759I), Jun 27, 1987: Doug DC915 (N491SA), St Louis, MO. Engine shutdown when oil temperature climbed to red line. Returned. Oil cooler, oil temperature sensors replaced.
- [Incident 19860119003569I](https://openairdocs.org/incident/19860119003569I), Jan 19, 1986: Doug DC915 (N491SA), St Louis, MO. Vibration in climb diminished with speed reduction. Returned. Engine changed. Vibration tolerance within limits.
- [Incident 19810105007009I](https://openairdocs.org/incident/19810105007009I), Jan 5, 1981: Doug DC915 (N491SA), St Louis, MO, Minor damage. When the gear was lowered a loud noise was heard in the nose gear area. Found retract cylinder lugs broken.

## Other aircraft with N491SA

- [Registered now](https://openairdocs.org/aircraft/N491SA): Robinson Helicopter R44 II, S/N 12831, built 2009

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