# N993Z: Douglas DC-9-31, registration cancelled 2001-08-28

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 28, 2001
- Status when cancelled: Triennial form not returned
- Airframe: [Douglas DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (registry code 3022065)
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE) (OpenAirDocs)
- Serial number: 47082
- Type of aircraft: Fixed wing multi engine
- Certificate issued: March 6, 1998
- Last registry action: July 9, 2001
- Mode S code: ADE007
- Owner when cancelled: [Wells Fargo Bank Northwest Na Trustee](https://openairdocs.org/faa-owner/WELLS%20FARGO%20BANK%20NORTHWEST%20NA%20TRUSTEE)
- Location: [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- Owner type: Corporation
- Owner's area on the map: 40.7558° N, 111.8843° W: Placed by OpenAirDocs at the center of ZIP code 84111, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N993Z
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=993Z
- Page: https://openairdocs.org/deregistered/N993Z-2001-08-28

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 (49)

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

- [SDR TWAA9912402](https://openairdocs.org/sdr/TWAA9912402), Sep 9, 1999: STRUT. RUPTURED. DURING LANDING THE LT MAIN LANDING GEAR COLLAPSED. AS A RESULT THE AIRCRAFT STOPPED WITH THE LEFT WING TIP IN CONTACT WITH THE GROUND. CHECK-C 12-7-98 STL. *S/D
- [SDR TWAA9907501](https://openairdocs.org/sdr/TWAA9907501), May 21, 1999: POWER SUPPLY. INOPERATIVE. DURING TAXI, FORWARD CABIN EGRESS LIGHTS CAME ON. AIRCRAFT RETURNED TO THE GATE. THE POWER SUPPLY WAS WORN OUT. POWER SUPPLY WAS REPLACED. CHECKS MADE TO ASSURE
- [SDR TWAA9801405](https://openairdocs.org/sdr/TWAA9801405), Jan 25, 1998: WIRE. WORN. STL - 698 - DURING OVERNIGHT MAINTENANCE, THE FLOOR EMERGENCY EGRESS LIGHTS WERE FOUND TO BE INOPERATIVE FROM ROW 22 TO 24. REPLACED THE FEED CABLE FROM THE BAT
- [SDR TWAA9810103](https://openairdocs.org/sdr/TWAA9810103), Oct 7, 1997: FRAME. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND 4 INCH CRACK IN LT FORWARD PASSENGER DOOR OUTER DOOR FRAME, AFT EDGE AT DOOR HOLD OPEN HOOK. INSTALLED NEW SECTION O
- [SDR TWAA9810007](https://openairdocs.org/sdr/TWAA9810007), Oct 7, 1997: SKIN. DENTED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND DENT IN SKIN ON FORMER STA 237, S19L TO 20L, 3 INCHES BY 2 INCHES BY .050 INCH DEEP. HFEC FOUND NO CRACKS IN DENT. R
- [SDR TWAA9810006](https://openairdocs.org/sdr/TWAA9810006), Oct 7, 1997: FRAME. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FORWARD FRAME CRACKED ON RT APU DOOR. STOP DRILLED CRACK AND INSTALLED DOUBLER WITH RIVETS AND SEALER PER SRM 51-20-
- [SDR TWAA9810005](https://openairdocs.org/sdr/TWAA9810005), Oct 7, 1997: FRAME. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LOWER FUSELAGE FORMER CRACKED AT STA 617, LONGERON 25L. INSTALLED ANGLE REPAIR ON FORMER PER SRM 53-01, PAGE 110 FIG
- [SDR TWAA9810003](https://openairdocs.org/sdr/TWAA9810003), Oct 7, 1997: SPLICE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 29L SPLICE FITTING CRACK AT STA 825. REPLACED LONGERON SPLICE PER SRM 51-01, PG 1, ITEM C. TOTAL TIME: 72,5
- [SDR TWAA9810002](https://openairdocs.org/sdr/TWAA9810002), Oct 7, 1997: WEB. CORRODED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND CORROSION ON MEMBRANE UNDER FLOOR PANEL NR 1, STA 148, RBL 44 TO RBL 48 INCHES. REMOVED AND INSTALLED NEW MEMBRANE PE
- [SDR TWAA9810001](https://openairdocs.org/sdr/TWAA9810001), Oct 7, 1997: SKIN. GOUGED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND DENT AND GOUGE AT FS 100, LONGERON 18L, 1 INCH BY 1 INCH BY .025 INCH DEEP. NO CRACK FOUND. REPAIRED PER SRM 53-04, 
- [SDR TWAA9809630](https://openairdocs.org/sdr/TWAA9809630), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FLOORBEAM TO SKIN TIE CRACKED BELOW LONGERON 18R, STA 996. REPLACED SKIN TIE PER SRM 51-01, PAGE 1 ITEM C. TOTAL TIM
- [SDR TWAA9809629](https://openairdocs.org/sdr/TWAA9809629), Oct 7, 1997: FRAME. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND CRACK IN FORMER RING AT STA 980, LONGERON 22L. REPAIRED CRACK PER SRM 53-03, PAGE 45. TOTAL TIME: 72,580 HOURS. TOTAL
- [SDR TWAA9809628](https://openairdocs.org/sdr/TWAA9809628), Oct 7, 1997: SPLICE. CRACKED. MCI - DURING OP 26 MAINTENANCE CHECK, FOUND LONGERON 30 SPLICE FITTING CRACKED AT STA 800. REPLACED FITTING PER SRM 51-01, PG 1, ITEM C. TOTAL TIME: 72,580 HOUR
- [SDR TWAA9809627](https://openairdocs.org/sdr/TWAA9809627), Oct 7, 1997: FRAME. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FUSELAGE FORMER SUPPORT FOOT CRACKED BETWEEN LONGERONS 30L AND 29L AT STA 617. REPLACED FORMER TO STRINGER SUPPORT C
- [SDR TWAA9809626](https://openairdocs.org/sdr/TWAA9809626), Oct 7, 1997: SUPPORT. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND FLOOR SUPPORT CRACK AT STA 832, LONGERON 30. WELDED CRACK IN FLOOR SUPPORT FLANGE PER DOUGLAS PROCESS SPEC 101301. T
- [SDR TWAA9809625](https://openairdocs.org/sdr/TWAA9809625), Oct 7, 1997: LONGERON. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND LONGERON 4L AT FS 160 WITH A .3750 INCH CRACK RADIATING FROM BOTH SIDES OF INBD FASTENER ATTACHMENT TO FORMER. MADE L
- [SDR TWAA9809624](https://openairdocs.org/sdr/TWAA9809624), Oct 7, 1997: FITTING. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND STRINGER TO FORMER FITTING CRACKED AT LONGERONS 29R TO 30R, STA 551. FITTING REPLACED WITH NEW PER SRM 51-01, PAGE 1
- [SDR TWAA9809623](https://openairdocs.org/sdr/TWAA9809623), Oct 7, 1997: SEAT TRACK. CORRODED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND CORROSION IN CHAIR TRACK AT STA 200. REPLACED TRACK PER SRM 51-01, PAGE 1 ITEM C. TOTAL TIME: 72,580 HOURS. TOTAL CY
- [SDR TWAA9809622](https://openairdocs.org/sdr/TWAA9809622), Oct 7, 1997: LONGERON. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 23R CRACKED AT FORWARD END, STA 756. REPLACED LONGERON SECTION PER SRM 53-02, FIGURE 18. TOTAL TIME: 72,580
- [SDR TWAA9809621](https://openairdocs.org/sdr/TWAA9809621), Oct 7, 1997: SPLICE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 28L SPLICE FITTING CRACKED AT STA 824. INSTALLED NEW PART PER SRM 51-01, PAGE 1, ITEM C. TOTAL TIME: 72,580
- [SDR TWAA9809620](https://openairdocs.org/sdr/TWAA9809620), Oct 7, 1997: SUPPORT. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND CRACKED SUPPORT BRACKET AT FS 588 BETWEEN STR 29L AND STR S30L. INSTALLED NEW BRACKET PER SRM 51-01, PAGE 1, ITEM C.
- [SDR TWAA9809619](https://openairdocs.org/sdr/TWAA9809619), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND STR 28R TIE CRACKED AT STA 585. REPLACED STRINGER FTG PER SRM 51-01, PARA C. (X)
- [SDR TWAA9809618](https://openairdocs.org/sdr/TWAA9809618), Oct 7, 1997: TIE. CRACKED. MDCI - DURING OP 16 MAINTENANCE CHECK, FOUND FUSELAGE LONGERON 29R SUPPORT CLIP CRACKED AT STA 660. INSTALLED NEW SUPPORT CLIP AT STA 660, LONGERON 29R PER SRM 
- [SDR TWAA9809616](https://openairdocs.org/sdr/TWAA9809616), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND STR 28L TIE CRACKED AT STA 585. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1 PARA C. (X)
- [SDR TWAA9809615](https://openairdocs.org/sdr/TWAA9809615), Oct 7, 1997: LONGERON. CORRODED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND CORRODED LONGITUDINAL STIFFENER AT STA 630 TO STA TO 680 BETWEEN L29R AND L30R. REPLACED HAT SECTION STIFFENER PER SR
- [SDR TWAA9809614](https://openairdocs.org/sdr/TWAA9809614), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND R29 STR TIE CRACKED AT STA 585. REPLACED STRINGER TIE PER SRM 53-01, PAGE 1 PARA C. (X)
- [SDR TWAA9809613](https://openairdocs.org/sdr/TWAA9809613), Oct 7, 1997: SPLICE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND LONGERON 29L SPLICE FITTING AT STA 848 CRACKED. REPLACED LONGERON SPLICE PER SRM 51-01, PAGE 1, ITEM C, AND STD PRAC
- [SDR TWAA9809612](https://openairdocs.org/sdr/TWAA9809612), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND A CRACK AT FLOOR BEAM TO LONGERON TIE AT STA 996, L18R. INSTALLED REPAIR AT STA 996, L18R, PER SRM 53-03. (X)
- [SDR TWAA9809611](https://openairdocs.org/sdr/TWAA9809611), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND STR 25R TIE CRACKED AT STA 585. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1 ITEM C. (X)
- [SDR TWAA9809610](https://openairdocs.org/sdr/TWAA9809610), Oct 7, 1997: LONGERON. CRACKED. MCI - DURING OP 15 MAINTENANCE CHECK FOUND FUSELAGE LONGERON 28R CRACKED AT STA 604. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1, PARA C. (X)
- [SDR TWAA9809609](https://openairdocs.org/sdr/TWAA9809609), Oct 7, 1997: WEB. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND HOLE IN MEMBRANE BELOW FLOOR AT FS 157, RBL 3, AND HAD CRACKS AND CORROSION FROM STA 145 TO STA 159, RBL 12 TO LBL 6
- [SDR TWAA9809608](https://openairdocs.org/sdr/TWAA9809608), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND STR 27R WITH TIE CRACKED AT STA 585. REPLACED LONGERON FITTING PER SRM 51-01, PAGE 1 PARA C. (X)
- [SDR TWAA9809607](https://openairdocs.org/sdr/TWAA9809607), Oct 7, 1997: TIE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND R24 STRINGER TIE CRACKED AT STA 585. INSTALLED NEW STR TIE PER SRM 51-01, PAGE1 PARA C. (X)
- [SDR TWAA9809606](https://openairdocs.org/sdr/TWAA9809606), Oct 7, 1997: ANGLE. CORRODED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND AFT FUSELAGE RT FUSELAGE TO VERTICAL FIN, LE ATTACH ANGLE CRACKED AT UPPER ROW OF FASTENERS AT MIDDLE. REPLACED ATTA
- [SDR TWAA9809604](https://openairdocs.org/sdr/TWAA9809604), Oct 7, 1997: FITTING. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK FOUND STRINGER TO FORMER FITTING CRACKED AT STA 632, L29R TO 30R. FITTING REPLACED WITH NEW PER SRM 51-01, PAGE 1. TOTAL TI
- [SDR TWAA9809601](https://openairdocs.org/sdr/TWAA9809601), Oct 7, 1997: BULKHEAD SUPPORT. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND SUPPORT BRACKET ON AFT PRESSURE BULKHEAD AFT OF 24 RL CRACKED AT STA 579. REPLACED CRACKED ANGLE PER SRM 51-00. TOTA
- [SDR TWAA9809515](https://openairdocs.org/sdr/TWAA9809515), Oct 7, 1997: FLANGE. WORN. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND RT APU DOOR INBD FORWARD FLANGE WORN. INSTALLED DOUBLER WITH SEALER PER SRM 51-20-0 FIG 7 AND RIVETS. (X)
- [SDR TWAA9807901](https://openairdocs.org/sdr/TWAA9807901), Oct 7, 1997: FLOORBEAM. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND A CRACK AT FLOORBEAM TO LONGERON TIE AT STATION 996, LONGERON 18R. INSTALLED REPAIR AT STATION 996, LONGER 18R PER D
- [SDR TWAA9806011](https://openairdocs.org/sdr/TWAA9806011), Oct 7, 1997: SKIN. DENTED. MCI - DURING OP16 MAINTENANCE CHECK, FOUND BULGES IN SKIN AT STATION 607, LONGERON 26L TO 26R. INSTALLED NEW SKIN PANEL PER SRM 51-01 PAGE 1 PARA C. (M)
- [SDR TWAA9805804](https://openairdocs.org/sdr/TWAA9805804), Oct 7, 1997: ANGLE. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND VERTICAL FIN TO FUSELAGE ATTACH ANGLE CRACKED JUST FORWARD OF LEFT FIN ACCESS PLATE, AT DORSAL FIN FITTING AREA. REM
- [SDR TWAA9805702](https://openairdocs.org/sdr/TWAA9805702), Oct 7, 1997: SKIN. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND 2 INCH DENT IN SKIN AT STATION 214, LONG 4L. HIGH FREQ EDDY CURRENT VERIFIED CRACK IN SKIN. REPAIRED PER SRM 53-04 F
- [SDR TWAA9805701](https://openairdocs.org/sdr/TWAA9805701), Oct 7, 1997: SPAR. CRACKED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND CRACK INDICATION IN RT WING REAR SPAR AT INBD FLAP HINGE CASTING LOWER INBOARD HOLE. REPAIRED PER DOUGLAS DRAWING JO
- [SDR TWAA9805601](https://openairdocs.org/sdr/TWAA9805601), Oct 7, 1997: SKIN. CORRODED. MCI - DURING OP 16 MAINTENANCE CHECK, FOUND BULGES IN THE LOWER FUSELAGE SKIN AT STA 607 STR 29L TO STR 29R. INSTALLED NEW SKIN PANEL PER SRM 51-01 PG 1 PARA C.
- [SDR TWAA9759001](https://openairdocs.org/sdr/TWAA9759001), May 13, 1997: BATTERY PACK. DISCHARGED. STL - FLT 578 - DURING CRUISE, EMERGENCY ESCAPE PATH LIGHTING ILLUMINATED. REMOVED AND REPLACED BATTERY PACK, MFG P/N 58922-2, MANUFACTURED BY LUMINESCENT SYSTE
- [SDR TWAA9734001](https://openairdocs.org/sdr/TWAA9734001), Mar 5, 1997: HYD LINE. LOOSE. STL - DURING CLIMB RIGHT MAIN GEAR UNSAFE LIGHT ILLUMINATED. REROUTED AND SECURED RIGHT MAIN GEAR ACTUATOR HYDRAULIC SUPPLY LINES. OPERATIONAL GEAR SWING NORMAL
- [SDR 96ZZZM1450](https://openairdocs.org/sdr/96ZZZM1450), Oct 6, 1996: BATTERY PACK. DISCHARGED. STL - DURING OVERNIGHT, FOUND RIGHT NACELLE EMERGENCY LIGHT INOP. FOUND BATTERY PACK MFG P/N 39164, MALFUNCTIONING. REPLACED BATTERY PACK AND EMERGENCY LIGHT SY
- [SDR 96ZZZX4907](https://openairdocs.org/sdr/96ZZZX4907), Aug 31, 1996: STRUT. REQUIRED SERVICE. CVG - FLT 421 - AFTER TAKEOFF WHEN LANDING GEAR WAS RETRACTED, NLG WOULD NOT RETRACT. LUBRICATED NOSE GEAR, SERVICED STRUT WITH HYDRUALIC FLUID AND NITROGEN. OP
- [SDR 96ZZZX310](https://openairdocs.org/sdr/96ZZZX310), Jan 7, 1996: LATCH. NOT LATCHED. STL - FLT 541 - AFTER TAKEOFF, LANDING GEAR RETRACTION LEFT MLG UNSAFE LIGHT REMAINED ON. CYCLED LANDING GEAR AND LANDING GEAR DOOR OPEN LIGHT REMAINED ILLUMINA
- [SDR 96ZZZX309](https://openairdocs.org/sdr/96ZZZX309), Jan 7, 1996: CONNECTOR. LOOSE. STL - FLT 394 - DURING APPROACH WHEN LANDING GEAR WAS EXTENDED, LANDING GEAR DOOR OPEN LIGHT REMAINED ON. VISUAL CHECK SHOWED LANDING GEAR DOORS TO BE CLOSED. F

## 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 MIA99IA249](https://openairdocs.org/ntsb/MIA99IA249), Sep 9, 1999: Douglas DC-9-31 (N993Z), Nashville, TN, incident, minor damage. Probable cause: A preexisting crack on the left main landing gear outer cylinder housing and the first officer's failure to maintain the proper rate of descent resulting in a hard landing on touchdown, and…

## 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 19990909029049I](https://openairdocs.org/incident/19990909029049I), Sep 9, 1999: Doug DC931 (N993Z), Nashville, TN, Minor damage. (.19) On September 9, 1999, at about 1138 central daylight time, a Douglas DC-9-31, N993Z, twa flight 600, registered to first security bank, north American…

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