# Service difficulty reports: Douglas DC-9-21

A list on [Douglas DC-9-21](https://openairdocs.org/model/douglas-dc-9-21.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 2 · 52 reports

- [SDR AALA201706219024](https://openairdocs.org/sdr/AALA201706219024.md): Frame · cracked · Jun 19, 2017 · N7548A · Doug DC921 · Fuselage Main, Frame
  > THREE WAY CRACK IN THE RIGHT MAIN LANDING GEAR WHEEL WELL FORWARD FRAME. REPAIRED IAW DWG 53-10-00-12. AIRCRAFT WAS GROUNDED.
- [SDR WX0A02009A](https://openairdocs.org/sdr/WX0A02009A.md): Duct · ruptured · Nov 2, 2002 · N127NK · Doug DC921 · Pneumatic Distribution System
  > LAS - TAIL COMPARTMENT HIGH TEMP ANNUNCIATOR INDICATION ILLUMINATED IN FLIGHT. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE INSPECTED TAIL COMPARTMENT AND ASSOCIATED PRESSURIZATION DISTRIBUTION SYSTEM FOR CAUSE OF HIGH TEMP INDICATION. MX DISC
- [SDR WXOA02009A](https://openairdocs.org/sdr/WXOA02009A.md): Duct · cracked · Nov 2, 2002 · N127NK · Doug DC921 · Air Distribution System
  > TAIL COMP HIGH TEMP ANNUNCIATOR INDIC ILLUMINATED INFLIGHT. AC RETURNED TO STATION W/O INCIDENT. MAINT INSP TAIL COMP AND ASSOC PRESS DIST SYS FOR CAUSE OF HIGH TEMP INDICATION. MAINT DISCOVERED BLEED AIR LEAK FROM AN UNKNOWN SOURCE IN THE RT AIR COND SYS.
- [SDR WXOA02009](https://openairdocs.org/sdr/WXOA02009.md): Duct · ruptured · Nov 2, 2002 · N127NK · Doug DC921 · Pneumatic Distribution System
  > LAS - TAIL COMPARTMENT HIGH TEMP ANNUNCIATOR INDICATION ILLUMINATED IN FLIGHT. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE INSPECTED TAIL COMPARTMENT AND ASSOCIATED PRESSURIZATION DISTRIBUTION SYSTEM FOR CAUSE OF HIGH TEMP INDICATION. MAINTEN
- [SDR WXOA02007](https://openairdocs.org/sdr/WXOA02007.md): Drive Gear · failed · Sep 18, 2002 · N127NK · Doug DC921 · Turbine Engine Oil System
  > ENROUTE, NR 1 ENGINE LOW OIL PRESSURE ANNUNCIATOR INDICATION ILLUMINATED. CREW COMPLIED WITH AOM EMERGENCY/ ABNORMAL PROCEDURES. PRECAUTIONARY INFLIGHT ENGINE SHUTDOWN ACCOMPLISHED. AIRCRAFT CONTINUED TO STATION WITHOUT INCIDENT. THE ENGINE WAS REMOVED AND
- [SDR WX0A01003](https://openairdocs.org/sdr/WX0A01003.md): Pan · cracked · Jul 25, 2001 · N127NK · Doug DC921 · Cargo/Baggage Doors
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND AFT CARGO DOOR CRACKED AROUND RIVNUT FASTENER AT LOWER FORWARD CORNER. ROUTED OUT CRACK ON AFT CARGO DOOR, FORWARD LOWER JAMB. FORMED DOUBLER REPAIR AND INSTALLED IAW DC9 SRM 51-10-2, 51-10-
- [SDR WX0A01002](https://openairdocs.org/sdr/WX0A01002.md): Aileron · delaminated · Jul 25, 2001 · N127NK · Doug DC921 · Wing Structure
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, LEFT AILERON INBOARD TAB DELAMINATION DETECTED ON LOWER OUTBOARD SIDE. DELAMINATION REPORTED TO BE AN AREA OF APPROXIMTELY 5 SQUARE INCHES. CUTOUT DELAMINATED AREA (APPROX 10 INCHES BY 3 INCHES).
- [SDR WX0A01001](https://openairdocs.org/sdr/WX0A01001.md): Attach Fitting · cracked · Jul 25, 2001 · N127NK · Doug DC921 · Empennage Structure
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, CRACKED DETECTED BY VISUAL INSPECTION AT VERTICAL STABILIZER LEFT DORSAL FIN ATTACH FITTING. HFEC INSPECTION CONFIRMED CRACKS EMANATING FROM EIGHT FASTENERS HOLES. REMOVED AND REPLACED DORSAL FIN
- [SDR WX0A01007](https://openairdocs.org/sdr/WX0A01007.md): Fuel Line · leaking · Jul 25, 2001 · N127NK · Doug DC921 · Engine Fuel Distribution
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, MAIN FUEL SUPPLY HOSE ASSEMBLIES ON RIGHT AND LEFT ENGINES TO FUEL CONTROL UNITS REPORTED LEAKING. FUEL LEAKAGE DETECTED DURING POST INSPECTION ENGINE RUNS. MAINTENANCE REMOVED AND REPLACED LEFT A
- [SDR WX0A01008](https://openairdocs.org/sdr/WX0A01008.md): Wire · chafed · Jul 25, 2001 · N127NK · Doug DC921 · AC Indicating System
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND RIGHT ENGINE AC LOAD METER IN COCKPIT OVERHEAD PANEL TO HAVE CHAFED WIRES AT CONNECTOR MAINTENANCE REPAIRED AND DETERMINED AC LOAD METER WIRING AIW DPS 1.834-2.1. SYSTEM OPERATIONAL CHECK NO
- [SDR WX0A01006](https://openairdocs.org/sdr/WX0A01006.md): Jackscrew · worn · Jul 25, 2001 · N127NK · Doug DC921 · Stabilizer Control System
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, HORIZONTAL STABILIZER JACKSCREW FAILED END PLAY CHECK PER WORK CARD 0855, SB 27A362 AND AD 2000-15-15. JACKSCREW END PLAY REPORTED AT.041 INCHES. REMOVED AND REPLACED HORIZONTAL STABILIZER JACKSC
- [SDR WX0A01005](https://openairdocs.org/sdr/WX0A01005.md): Skin · corroded · Jul 25, 2001 · N127NK · Doug DC921 · Fuselage Main, Plate/Skin
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, LEVEL 1 CORROSION WAS FOUND IN LOWER AFT FUSELAGE SKIN AT AFT JACK PAD AREA. CORROSION DAMAGE TO FASTENERS IN AREA ALSO DETECTED. REMOVED INTERNAL AND EXTERNAL STRUCTURE IN LOWER FUSELAGE JACK PAD
- [SDR WX0A01004](https://openairdocs.org/sdr/WX0A01004.md): Skin · cracked · Jul 25, 2001 · N127NK · Doug DC921 · Cargo/Baggage Doors
  > LCQ - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND FORWARD CARGO DOOR INNER SKIN CRACKED IN THE RADIUS BELOW AFT LATCH COVER. STOP DRILLED CRACK. FABRICATED AND INSTALLED REPAIR ANGLE IAW DC9 SRM 51-10-4, 52-05 FIGURE 26A, 51-30-5, 51-30-2,
- [SDR WXOA99031](https://openairdocs.org/sdr/WXOA99031.md): Slat · dented · Nov 13, 1999 · N127NK · Doug DC921 · Leading Edge Devices
  > AMA - BIRD STRIKE REPORTED TO LEFT WING AT 8500 FT DURING DESCENT FOR LANDING. AIRCRAFT LANDED WITHOUT INCIDENT. BIRD STRIKE INSPECTION ACCOMPLISHED IAW DC-9 MM 05-56. FOUND LEFT WING NR 2 OUTBOARD LEADING EDGE SLAT TO HAVE SUSTAINED BIRD STRIKE DAMAGE. DE
- [SDR WXOA99030](https://openairdocs.org/sdr/WXOA99030.md): Angle · corroded · Oct 22, 1999 · N127NK · Doug DC921 · Fuselage Miscellaneous Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND LEVEL 1 CORROSION ON AFT STAIR ANGLE. REMOVED CORRODED ANGLE. FABRICATED REPAIR ANGLE AND INSTALLED IAW DC-9 SRM 51-10-2, 51-10-3 AND 51-30-2. (M)
- [SDR WXOA99029](https://openairdocs.org/sdr/WXOA99029.md): Beam · cracked · Oct 22, 1999 · N127NK · Doug DC921 · Service Doors
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND CRACK IN GALLEY SERVICE DOOR HORIZONTAL BEAM AFT EDGE. CRACK REPORTED APPROXIMATELY.240 INCH LONG, EXTENDING FROM FASTENER HOLE. FABRICATED DOUBLER PER DC-9 SRM 52-05 FIGURE 25, SHEET 7 AND
- [SDR WXOA99028](https://openairdocs.org/sdr/WXOA99028.md): Frame · cracked · Oct 22, 1999 · N127NK · Doug DC921 · Fuselage Main, Frame
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND THREE CRACKES ON FUSELAGE FRAME STATION 718 AT STRINGER 17L. REMOVED DAMAGED MATERIAL. PERFORMED HFEC INSPECTION IAW OPS 4.751. NO EVIDENCE OF CRACKS EXTENDING FROM CUT OUT AREA. FABRICATE
- [SDR WXOA99027](https://openairdocs.org/sdr/WXOA99027.md): Frame · cracked · Oct 22, 1999 · N127NK · Doug DC921 · Fuselage Main, Frame
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND 3.5 INCH CRACK IN RADIUS OF FUSELAGE FRAME STATION 737 AT LONGERON 17L. REMOVED DAMAGED SECTION OF FRAME. FABRICATED ANGLE, FILLER AND DOUBLER (RED W/C A134, B03, W063). INSTALLED REPAIR PA
- [SDR WXOA99026](https://openairdocs.org/sdr/WXOA99026.md): Frame · cracked · Oct 22, 1999 · N127NK · Doug DC921 · Fuselage Main, Frame
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND CRACK IN AFT ACCESSORY COMPARTMENT RIGHT SIDE OF FRAME 859 AT LONGERON 13R NEAR LIGHTNING HOLE. STOP DRILLED CRACK. FABRICATED REPAIR DOUBLER AND INSTALLED IAW DC-9 SRM 53-01, 51-10-2, 51-10
- [SDR WXOA99025](https://openairdocs.org/sdr/WXOA99025.md): Intercostal · cracked · Oct 22, 1999 · N127NK · Doug DC921 · Fuselage Miscellaneous Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND INTERCOSTAL CRACKED AT FORWARD AREA OF AFT CARGO DOOR JAMB. REMOVED DAMAGED INTERCOSTAL AND REPLACED IAW EA M-7200-99-09504. (M)
- [SDR WXOA99024](https://openairdocs.org/sdr/WXOA99024.md): Doubler · cracked · Oct 20, 1999 · N127NK · Doug DC921 · Rudder Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, FOUND INTERNAL DOUBLER EDGE OF RUDDER BROKEN AT REFERENCE ZR99. REMOVED DAMAGED INTERNAL DOUBLER. FABRICATED REPLACEMENT DOUBLER IAW DC-SRM 51-10-1. INSTALLED REPAIR DOUBLER IAW DC-9 SRM 51-30-2.
- [SDR WXOA99023](https://openairdocs.org/sdr/WXOA99023.md): Shear Tie · cracked · Oct 16, 1999 · N127NK · Doug DC921 · Fuselage Miscellaneous Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTION DETECTED AND APPROXIMATE 2 INCH LONG CRACK ON SHEAR TIE BETWEEN LONGERON L14 AND L15 AT FUSELAGE STATION 766. REMOVED DAMAGED SHEAR TIE, FABRICATED REPAIR SHEAR TIE (REF W/C A13
- [SDR WXOA99022](https://openairdocs.org/sdr/WXOA99022.md): Support · cracked · Oct 16, 1999 · N127NK · Doug DC921 · Cargo/Baggage Doors
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTION OF FORWARD CARGO DORO PER OPS 4.735 DETECTED CRACKED AT AFT SIDE OF INTERCOSTAL ANGLE SUPPORT LOCATED AFT SIDE OF FORWARD STOP. REMOVED CRACKED ANGLE SUPPORT. FABRICATED REPAIR
- [SDR WXOA99021](https://openairdocs.org/sdr/WXOA99021.md): Shear Tie · cracked · Oct 15, 1999 · N127NK · Doug DC921 · Fuselage Miscellaneous Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTION DETECTED CRACK OF APPROXIMATELY 2 INCH LONG ON SHEER CLIP BETWEEN LONGERON L15 AND L16 AT FUSELAGE STATION 766. FABRICATED REPAIR SHEER CLIP. REMOVED CRACKED SHEER CLIP AND INS
- [SDR WXOA99020](https://openairdocs.org/sdr/WXOA99020.md): Skin · cracked · Oct 15, 1999 · N127NK · Doug DC921 · Landing Gear Doors
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, CRACK DETECTED AT UPPER AFT AREA OF LEFT MLG DOOR NEAR HINGE. STOP DRILLED CRACK, INSTALLED DOUBLER P/N J060256-23 IAW SRM 52-05 AND EA HM-7200-99-09402. (M)
- [SDR WXOA99019](https://openairdocs.org/sdr/WXOA99019.md): Angle · cracked · Oct 15, 1999 · N127NK · Doug DC921 · Nacelle/Pylon Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC DETECTED A CRACK ON ANGLE P/N 9912243-10 AT THE RIGHT PYLON BULKHEAD LOWER FRONT SPAR (F/S 786) EXTENDING FROM FASTENER HOLE APPROX.400 INCH LONG. REMOVED AND REPLACED ANGLE IAW DC-9 SRM
- [SDR WXOA99018](https://openairdocs.org/sdr/WXOA99018.md): Skin · dented · Oct 15, 1999 · N127NK · Doug DC921 · Rudder, Plate/Skin
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, DENT DISCOVERED ON RIGHT SIDE OF RUDDER BETWEEN RIBS 23 AND 24, LOCATED APPROXIMATELY 18 INCH FROM TRAILING EDGE. TRIMMED OUT DAMAGED AREA. FABRICATED REPAIR EXTERNAL DOUBLER IAW DC-9 SRM 55003, P
- [SDR WXOA99017](https://openairdocs.org/sdr/WXOA99017.md): Fitting · cracked · Oct 15, 1999 · N127NK · Doug DC921 · Nacelle/Pylon Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTIN PERFORMED PER OPS 4.751 OF LEFT PYLON 'BATH TUB' FITTING. INDICATION OF CRACK NOTED AT FAIL/SAFE STRAP INBOARD UPPER RIVET. DIMENSION OF CRACK APPROXIMATELY 2.5 INCH IN LENGTH.
- [SDR WXOA99016](https://openairdocs.org/sdr/WXOA99016.md): Angle · cracked · Oct 15, 1999 · N127NK · Doug DC921 · Cargo/Baggage Doors
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTION PERFORMED PER OPS 4.735 AT FORWARD CARGO DOOR. INDICATION OF CRACK NOTED ON INTERCOSTAL ANGLE FITTING, LOCATED AFT SIDE OF LOWER FORWARD DOOR STOP. REMOVED EXISTING ANGLE AND F
- [SDR WXOA99015](https://openairdocs.org/sdr/WXOA99015.md): Door Pan · cracked · Oct 14, 1999 · N127NK · Doug DC921 · Cargo/Baggage Doors
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, CRACK DETECTED AT PAN AND INTERCOSTAL INTERSECTION OF TOP FORWARD CORNER OF FORWARD CARGO DOOR. FABRICATED REPAIR DOUBLER, STOP DRILLED CRACK AND INSTALLED REPAIR DOUBLER IAW DC-9 SRM 51-10-2, 51-1
- [SDR WXOA99014](https://openairdocs.org/sdr/WXOA99014.md): Angle · cracked · Oct 14, 1999 · N127NK · Doug DC921 · Cargo/Baggage Doors
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTION DETECTED CRACK INDICATION ON FORWARD CARGO DOOR AT FORWARD SIDE OF LOWER AFT DOOR STOP, FORWARD SIDE OF INTERCOSTAL FITTING. REMOVED CRACKED ANGLE, FABRICATED REPAIR ANGLE AND I
- [SDR WXOA99013](https://openairdocs.org/sdr/WXOA99013.md): Longeron · cracked · Oct 14, 1999 · N127NK · Doug DC921 · Fuselage Main, Longeron/Stringer
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTION DETECTED CRACK INDICATION AT LONGERON 16, FUSELAGE STATION 786 RIGHT. CRACK EVIDENT ON LONGERON AT CONNECTION POINT OF 'L' BRACKET ON AFT SIDE OF BULKHEAD. REMOVED DAMAGED AREA
- [SDR WXOA99012](https://openairdocs.org/sdr/WXOA99012.md): Panel · cracked · Oct 14, 1999 · N127NK · Doug DC921 · Vertical Stabilizer, Plate/Skin
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, VERTICAL STABILIZER ACCESS PANEL 3806 HAS CRACK PROPOGATING FROM EXISTING STOP DRILL. STOP DRILLED NEW CRACK, FABRICATED DOUBLER AND INSTALLED REPAIR DOUBLER IAW DC-9 SRM 51-10-2, 51-10-3, 51-30-2
- [SDR WXOA99011](https://openairdocs.org/sdr/WXOA99011.md): Duct · cracked · Oct 14, 1999 · N127NK · Doug DC921 · Vertical Stabilizer
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, VERTICAL STABILIZER AIR INTAKE DUCT AT 12 O'CLOCK POSITION HAS A CRACK APPROXIMATELY.25 INCHES LONG. REPAIRED CRACK IAW BOEING EA M-7200-99-09364. (M)
- [SDR WXOA99010](https://openairdocs.org/sdr/WXOA99010.md): Frame · cracked · Oct 14, 1999 · N127NK · Doug DC921 · Fuselage Main, Frame
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, NDT HFEC INSPECTION AT STATION 766 RIGHT SIDE, BETWEEN LONGERON 15 AND 16, DETECTED CRACK IN RADIUS AT 3RD FASTENER BELOW LONGERON 15. REMOVED DAMAGED SECTION OF FORMER, FABRICATED REPAIR FORMER AN
- [SDR WXOA99009](https://openairdocs.org/sdr/WXOA99009.md): Support · corroded · Oct 14, 1999 · N127NK · Doug DC921 · Fuselage Miscellaneous Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTON AT REPAIR STATION, LEVEL 1 SURFACE CORROSION DETECTED AT THREE PLACES IN AFT RIGHT LAV FLOOR SUPPORT FRAME, STATIONS 786 TO 826, RBL PLUS/MINUS 16. REMOVED CORRODED PARTS FROM FLOOR SUPPORT FRAME. FABRICATED 2 'L' ME
- [SDR WXOA99008](https://openairdocs.org/sdr/WXOA99008.md): Clips · cracked · Oct 12, 1999 · N127NK · Doug DC921 · Nacelle/Pylon Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, CRACKS DETECTED IN TWO CLIPS ON RIGHT ENGINE LOWER APRON. REMOVED CRACKED CLIPS, FABRICATED REPAIR CLIPS PER DC-9 SRM 51-10-2 AND SAMPLE, ALODINE AND PRIMED CLIPS PER DC-9 SRM 51-10-3, AND INSTALLE
- [SDR WXOA99007](https://openairdocs.org/sdr/WXOA99007.md): Angle · cracked · Oct 11, 1999 · N127NK · Doug DC921 · Nacelle/Pylon Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, PERFORMED NDT HFEC INSPECTION PER OPS 4.735. RESULTS OF INSPECTION DETECTED CRACK ON ANGLE P/N 9912243-9 AT THE LEFT PYLON LOWER FRONT SPAR STATION Y781/Z20. REMOVED CRACKED ATTACH ANGLE AND INSTA
- [SDR WXOA99006](https://openairdocs.org/sdr/WXOA99006.md): Frame · cracked · Oct 6, 1999 · N127NK · Doug DC921 · Fuselage Main, Frame
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, AFT ACCESSORY COMPARTMENT FRAME 859 AT LONGERON L13 IS CRACKED BY LIGHTNING HOLE. STOP DRILLED CRACK, FABRICATED AND INSTALLED DOUBLER IAW DC-9 SRM 53-01 PAGE 9, 51-10-2, 51-10-3 AND 51-30-2. (M)
- [SDR WXOA99005](https://openairdocs.org/sdr/WXOA99005.md): Duct · cracked · Oct 6, 1999 · N127NK · Doug DC921 · Air Distribution System
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, CRACK DETECTED IN COOLING EXHAUST DUCT AT FUSELAGE STATION 261 AND LONGERON L21. WELDED CRACKS TWO PER REPAIR STATION PROCEDURES IAW FAA AC 43.13 1A. (M)
- [SDR WXOA99004](https://openairdocs.org/sdr/WXOA99004.md): Bracket · cracked · Oct 6, 1999 · N127NK · Doug DC921 · Wing Miscellaneous Structure
  > MHV - DURING AIRCRAFT SCHEDULED INSPECTION AT REPAIR STATION, LEFT WING SLAT TRACK NR 2 FORWARD LOWER PANEL BRACKET CRACKED AND OUTBOARD BRACKET HOLE ELONGATED. REMOVED TWO DAMAGED BRACKETS, FABRICATED REPAIR BRACKETS AND INSTALLED REPAIR BRACKETS IAW DC-9 SR
- [SDR WXOA98001](https://openairdocs.org/sdr/WXOA98001.md): Connector · failed · Oct 14, 1998 · N127NK · Doug DC921 · Passenger Compartment Lighting
  > FAT - DURING ACCOMPLISHMENT OF SCHEDULED AIRCRAFT MAINTENANCE, FOUND DAMAGED ELECTRICAL WIRING CONNECTOR AT PRODUCTION SPLICE FOR ROWS 9-10 (RT) CABIN INTERIOR OVERHEAD AND SIDEWALL LIGHTING. GROUND WIRE DISCOVERED LOOSE AT CONNECTOR CAUSING ELECTRICAL ARCING
- [SDR GTIA9700290](https://openairdocs.org/sdr/GTIA9700290.md): Battery Pack · discharged · May 21, 1997 · N125NK · Doug DC921 · Emergency Lighting
  > DTW - FLT 621 - RIGHT OVERWING EXIT LIGHT INOPERATIVE. FOUND LIGHT SOCKET BROKEN AND BATTERY PACK BATTERIES LOW, REPLACED LIGHT ASSY AND BATTERY PACK BATTERIES. (X)
- [SDR GTIA9700251](https://openairdocs.org/sdr/GTIA9700251.md): Ps4 Line · broken · Mar 13, 1997 · N125NK · Doug DC921 · Fuel Controlling System
  > CHS - FLT 301 - RIGHT NR 2 ENGINE LOST PARTIAL POWER FROM 1.95 TO 1.6 FOR A FEW MINUTES AND THEN SPOOLED DOWN TO IDLE. WOULD NOT PRODUCE MORE THAN 1.1 FPR. FOLLOWED CHECKLIST AND LANDED AT CHS. FOUND BROKEN PS4 LINE IN FAN DUCTED AREA. REMOVED AND REPLACED L
- [SDR GTIA9700187](https://openairdocs.org/sdr/GTIA9700187.md): Connector · loose · Mar 8, 1997 · N125NK · Doug DC921 · Airborne Auxiliary Power Unit (APU) System
  > ACY - FLT 514 - DURING PUSH BACK AT RSW, APU SHUT ITSELF DOWN FOR NO REASON. A RESTART WAS SUCCESSFUL, BUT APU AGAIN SHUT ITSELF OFF AFTER APPROXIMATELY 30 SECONDS. FOUND LOOSE CANNON PLUG ON CENTRIFUGAL SWITCH, SECURED, AND SERVICED OIL IAW 49-60-1. OPS CH
- [SDR GTIA9700238](https://openairdocs.org/sdr/GTIA9700238.md): Switch · failed · Feb 27, 1997 · N125NK · Doug DC921 · Engine Thrust Reverser
  > DTW - FLT 905 - LEFT THRUST REVERSER UNLOCK LIGHT STAYED ON AFTER DEPLOYMENT. DEFERRED IAW MEL 78-1, CAT 'C' DMI NR 00210. REMOVED AND REPLACED REVERSER UNLOCK LIGHT MICROSWITCH IAW DOUGLAS DC-9 MM CHAPTER 78. OPS CHECK NORMAL SEVERAL TIMES. CLEARS DMI NR
- [SDR 96NK208](https://openairdocs.org/sdr/96NK208.md): Connector · corrosion · Sep 26, 1996 · N125NK · Doug DC921 · Landing Gear Position and Warning
  > LOG PAGE 028581. AIR RETURN. AFTER TAKEOFF, GEAR RETRACTED. LEFT MAIN LANDING GEAR INDICATED DOWN WITH NO RED (UNSAFE) LIGHT. DOOR LIGHT WAS OUT. GEAR INDICATION NORMAL, LANDING NORMAL. CORRECTIVE ACTION: FOUND MINOR CORROSION IN LEFT MAIN GEAR DOWNLOCK
- [SDR GTIA96NK189](https://openairdocs.org/sdr/GTIA96NK189.md): Release Mech · out of adjust · Aug 16, 1996 · N125NK · Doug DC921 · Aerodynamic Fairings
  > LOG PAGE 027001. TAIL CONE FAILED TO RELEASE DURING TAIL CONE RELEASE SYSTEM CHECK. ADJUSTED TAIL CONE RELEASE SYSTEM MECHANISM IAW DC-9 MM 53-50-0. OPS CHECKS GOOD. (X)
- [SDR 96ZZZX3274](https://openairdocs.org/sdr/96ZZZX3274.md): Bal Resistor · out of adjust · Mar 22, 1996 · N128NK · Doug DC921 · Engine EGT/TIT Indicating System
  > BOS/BOS - FLT 361 - ABORTED TAKEOFF, NR 2 ENGINE EGT WAS ERRATIC. THE NR 2 ENGINE EGT GAUGE STOPS AT APPROXIMATELY 350 DEGREES WHEN TAKEOFF POWER WAS APPLIED. FOUND THE BALANCING RESISTOR OUT OF TOLERANCE. ADJUSTED IAW MM 77-20-0, PAGE 201. RAN ENGINES TO
- [SDR 96ZZZX2843](https://openairdocs.org/sdr/96ZZZX2843.md): Balance Resistor · out of tolerance · Mar 22, 1996 · N128NK · Doug DC921 · Engine EGT/TIT Indicating System
  > BOS/BOS - FLT 361 - ABORTED TAKEOFF, NR 2 ENGINE EGT WAS ERRATIC. THE NR 2 ENGINE EGT GAUGE STOPS AT APPROXIMATELY 350 DEGREES WHEN TAKEOFF POWER WAS APPLIED.

Next page: https://openairdocs.org/model/douglas-dc-9-21/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE aircraft_model_key = 'DC921'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/douglas-dc-9-21/reports

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