# Service difficulty reports: N981Z, cancelled Sep 19, 2016

A list on [N981Z, cancelled Sep 19, 2016](https://openairdocs.org/deregistered/N981Z-2016-09-19.md).

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

- [SDR ZW0A0109001](https://openairdocs.org/sdr/ZW0A0109001.md): Skin · cracked · Sep 19, 2001 · N981Z · Doug DC931 · Fuselage Main, Plate/Skin
  > THE FUSELAGE SKIN WAS CRACKED AT STA 168 AND LONGERON 29R, 1.625 INCHES AFT OF AREA CUT OUT FOR CORROSION, VERIFIED BY EDDY CURRENT. ACCOMPLISHED SKIN REPAIR AT STA 168 AND LONGERON 29R PER SRM 53-04 AND ARA 17918.
- [SDR TWAA9915502](https://openairdocs.org/sdr/TWAA9915502.md): Power Supply · inop · Nov 14, 1999 · N981Z · Doug DC931 · Emergency Lighting
  > TWO FORWARD CABIN OVERHEAD EMERGENCY LIGHTS REMAINED ON AFTER ALL ELECTRICAL POWER WAS OFF. REPLACED THE POWER SUPPLY, (P/N 60030451LB) AND BATTERY (P/N 408822101). CHECK-C 8-29-99 MCI.
- [SDR TWAA9910303](https://openairdocs.org/sdr/TWAA9910303.md): Longeron · cracked · Jul 14, 1999 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP 16 MAINT CHECK, FOUND STA 965 LONGERON 17L WAS CRACKED AT LONGERON TO FORMER. CRACK APPROX.75 INCH LONG. REPLACED LONGERON FROM STA 955 TO 990 PER SRM 53-02, FIG 18.
- [SDR TWAA9910302](https://openairdocs.org/sdr/TWAA9910302.md): Skin · cracked · Jul 14, 1999 · N981Z · Doug DC931 · Wing, Plate/Skin
  > DURING OP 16 MAINT CHECK, FOUND RT WING UPPER WING SKIN CRACKED AT FUEL TANK ACCESS PLATE 1410A. HIGH FREQ EDDY CURRENT ACCOMP PER 51-00-03, PART 6. CRACK WAS CONTAINED AT PLATE ACCESS HOLE. REPAIRED PER SRM 57-03 FIG 23.
- [SDR TWAA9910301](https://openairdocs.org/sdr/TWAA9910301.md): Intercostal · corroded · Jul 13, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND INTERCOSTAL AT LONGERON 28R WITH INTERGRANULAR CORROSION BETWEEN STRINGER 937 AND 950. PART MADE PER DRAWING 9957723. REPLACED INTERCOSTAL, INSTALLED WITH HI-LOKS, BECAUSE THEY WERE ORIGINAL FASTENER.
- [SDR TWAA9908905](https://openairdocs.org/sdr/TWAA9908905.md): Angle · cracked · Jun 23, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND COCKPIT CENTER FRAME ANGLE 9911505-7 WAS CRACKED APPROXIMATELY 1.5 INCH IN RADIUS AT I/B END STA 83.55, X=10.00, Z=42, ON LT SIDE. INSTALLED NEW FRAME PER ITEM 30 OF EMLR 69590.
- [SDR TWAA9908909](https://openairdocs.org/sdr/TWAA9908909.md): Frame · cracked · Jun 22, 1999 · N981Z · Doug DC931 · Fuselage Main, Frame
  > DURING OP 16 MAINT CHECK, FOUND COCKPIT FRAME 5 ON LT SIDE WAS CRACKED IN RADIUS AT X=+10 CONFIRMED WITH EDDY CURRENT. CRACK WAS APPROXIMATELY.75 INCH LONG AT STA 83.55. REPAIRED PER SRM 53-03 FIG 34, SHEETS 1 TO 7.
- [SDR TWAA9908908](https://openairdocs.org/sdr/TWAA9908908.md): Frame · cracked · Jun 22, 1999 · N981Z · Doug DC931 · Fuselage Main, Frame
  > DURING OP 16 MAINT CHECK, FOUND COCKPIT FRAME CRACKED AT STA 83.55, X=-11 INCHES, APPROXIMATELY 1.5 INCHES LONG ON RT SIDE. REPAIRED PER SRM 53-03, FIG 34 SHEET 1 TO 7.
- [SDR TWAA9908601](https://openairdocs.org/sdr/TWAA9908601.md): Longeron · cracked · Jun 22, 1999 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP 16 MAINT CHECK, FOUND CRACK AT LONGERON TO FRAME FASTENERS AT STA 200, LONGERON 2L. SPLICED IN NEW LONGERON PER SRM 53-02, PAGES 48 TO 53, FROM STA 190 TO 228.
- [SDR TWAA9908910](https://openairdocs.org/sdr/TWAA9908910.md): Floorbeam · corroded · Jun 18, 1999 · N981Z · Doug DC931 · Fuselage Main, Floor Beam
  > DURING OP 16 MAINT CHECK, FOUND STA 200 FLOORBEAM CAP CORRODED JUST OUTBOARD OF NUMBER 4 CHAIR TRACK. REPAIRED FLOORBEAM PER SRM 53-05, PAGE 31.
- [SDR TWAA9908907](https://openairdocs.org/sdr/TWAA9908907.md): Support · corroded · Jun 17, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND CORROSION ON FLOOR SUPPORT AT NUMBER 2 SEAT TRACK TO CENTERLINE, STA 200. REPLACED FLOOR SUPPORT PER SPM 6-70-01, PAGE 3.
- [SDR TWAA9908906](https://openairdocs.org/sdr/TWAA9908906.md): Support · corroded · Jun 17, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND CORROSION ON FLOOR SUPPORT AT STA 200, BETWEEN NUMBER 1 AND 2 SEAT TRACKS. REPLACED FLOOR SUPPORT PER STD PROCESSES MANUAL 6-70-01, PAGE 3.
- [SDR TWAA9908202](https://openairdocs.org/sdr/TWAA9908202.md): Bulkhead Web · corroded · Jun 2, 1999 · N981Z · Doug DC931 · Fuselage Main, Bulkhead
  > DURING OP 16 MAINT CHECK, FOUND CORROSION WITH POPPED RIVETS AND PILLOWING AT AFT PRESSURE BULKHEAD, STA 996 BETWEEN LONGERON 26L AND 28L. REMOVED CORROSION PER SPM 6-80-01 AND INSTALLED DOUBLER PER SRM 53-03, FIG 24.
- [SDR TWAA9907904](https://openairdocs.org/sdr/TWAA9907904.md): Skin · corroded · May 28, 1999 · N981Z · Doug DC931 · Fuselage Main, Plate/Skin
  > DURING OP 16 MAINT CHECK, FOUND SKIN CORROSION BEYOND LIMITS AT STA 756 TO 803, RBL 26L TO 26R. REPLACED SKIN PER DOUGLAS DRAWING 5911421 AND 5916154, AND SPM 6-70-01.
- [SDR TWAA9907903](https://openairdocs.org/sdr/TWAA9907903.md): Support · corroded · May 25, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND CORROSION ON FLOOR SUPPORT AT STA 200. NUMBER 1 FLOOR TRACK TO MEMBRANE AREA, LBL 50. CORROSION WAS REMOVED PER SRM 6-80-01, PAGE 1 AND REPLACED FLOOR SUPPORT PER SPM 6-70-01.
- [SDR TWAA9907902](https://openairdocs.org/sdr/TWAA9907902.md): Floor · damaged · May 25, 1999 · N981Z · Doug DC931 · Fuselage Floor Panel
  > DURING OP 16 MAINT CHECK, FOUND REPAIR ON FLOOR MEMBRANE BETWEEN STA 190 TO 210, LBL O IN TO 22 IN, WAS COMING LOOSE AND HAD POPPED RIVETS INSTALLED. REPLACED MEMBRANE PER SPM 6-70-01, 775T3 30 PER ORIGINAL SAMPLE.
- [SDR TWAA9907506](https://openairdocs.org/sdr/TWAA9907506.md): Frame · bent · May 18, 1999 · N981Z · Doug DC931 · Fuselage Main, Frame
  > DURING OP 16 MAINT CHECK, FOUND ON RT SIDE OF AIRCRAFT AT CUSP LINE STA 996, THE FWD EDGE OF THE FLANGE WAS BLENDED AND REPAIRED. INSTALLED TEE CAP PER SRM 53-03, FIG 37.
- [SDR TWAA9907510](https://openairdocs.org/sdr/TWAA9907510.md): Casting · cracked · May 11, 1999 · N981Z · Doug DC931 · Wing, Control Surface Attach Fittings
  > DURING OP 16 MAINT CHECK, FOUND LT WING REAR SPAR I/B FLAP ATTACH CASTING HAD CRACK INDICATION AT LOWER O/B HOLE AT 8 O'CLOCK AND LOWER I/B HOLE AT 5:30 AND 6:00 O'CLOCK POSITIONS. REPAIRED PER MC8-AD-34 AND DRAWING JO60271M.
- [SDR TWAA9906904](https://openairdocs.org/sdr/TWAA9906904.md): Bulkhead · cracked · May 10, 1999 · N981Z · Doug DC931 · Fuselage Main, Bulkhead
  > DURING OP 16 MAINT CHECK, FOUND STA 965 BULKHEAD CRACKED BETWEEN LONGER 15 AND 16L. REMOVED AND REPLACED WEB PER SPM 6-70-01.
- [SDR TWAA9907001](https://openairdocs.org/sdr/TWAA9907001.md): Floorbeam · corroded · May 7, 1999 · N981Z · Doug DC931 · Fuselage Main, Floor Beam
  > DURING OP 16 MAINT CHECK, FOUND FLOORBEAM AT STA 160, RBL 48, WITH CORROSION MATERIAL LOSS BEYOND LIMITS TO THE TOP CAP AFT FLANGE. REPAIRED PER SRM 53-05, FIG 20A.
- [SDR TWAA9907301](https://openairdocs.org/sdr/TWAA9907301.md): Floorbeam · cracked · May 5, 1999 · N981Z · Doug DC931 · Fuselage Main, Floor Beam
  > DURING OP 16 MAINT CHECK, FOUND CABIN FLOORBEAM REPAIR CRACKED 2 INCHES LONG IN UPPER CAP RADIUS AT FWD SIDE OF STA 180, LBL 15. REPLACED FLOORBEAM TEE UPPER CAP PER SRM 53-11-1, FIG 13 SHEET 1, PAGE 45 AND 47, FIG 13 SHEET 2 AND DAC DRAWING 9923484. INSTALL
- [SDR TWAA9906903](https://openairdocs.org/sdr/TWAA9906903.md): Splice · cracked · May 5, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND IN FWD CARGO COMPT THAT LONGERON 30 PRODUCTION SPLICE HAD 2 CRACKS APPROX 1 INCH LONG AT STA 229. REPLACED CRACKED SPLICE PER DOUGLAS INSTALLATION DRAWING 5913508.
- [SDR TWAA9906902](https://openairdocs.org/sdr/TWAA9906902.md): Casting · cracked · May 5, 1999 · N981Z · Doug DC931 · Wing, Control Surface Attach Fittings
  > DURING OP 16 MAINT CHECK, FOUND RT WING T/E REAR SPAR CENTER FLAP ATTACH CASTING HOLES LINER O/B HOLE AT 6 O'CLOCK POSITION WITH CRACK INDICATION. FIFTEEN PERCENT THICKNESS GROUND OUT AND CRACK WAS GONE. REPAIRED REAR SPAR AREA PER DOUGLAS SERVICE REWORK DRA
- [SDR TWAA9906901](https://openairdocs.org/sdr/TWAA9906901.md): Former · corroded · May 4, 1999 · N981Z · Doug DC931 · Fuselage Main, Frame
  > DURING OP 16 MAINT CHECK, FOUND FORMER AND WEB CORRODED AT STA 200 TO 206, LONGERON 18L AND ABOVE. REMOVED CORROSION PER SPM 6-80-1, PARAGRAPH 3, SECTION A FIG 1. INSTALLED NEW WEB PER SPM 6-70-1.
- [SDR TWAA9906405](https://openairdocs.org/sdr/TWAA9906405.md): Membrane · corroded · Apr 29, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND CORROSION ON MEMBRANE BELOW CABIN FLOOR AT RBL 45 TO RBL 55 IN, AT STA 218 TO 237. REMOVED CORRODED MEMBRANE AND INSTALLED NEW ONE PER SPM 6-70-01.
- [SDR TWAA9906702](https://openairdocs.org/sdr/TWAA9906702.md): Longeron · cracked · Apr 24, 1999 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP 16 MAINT CHECK, FOUND LONGERON 17L CRACKED AT STA 965. REPLACED LONGERON PER SRM 53-02 FIG 18 AND LONGERON IDENTIFICATION 53-11-3. LONGERON REPLACED FROM STA 950 TO 996.
- [SDR TWAA9906004](https://openairdocs.org/sdr/TWAA9906004.md): Depressor · damaged · Apr 19, 1999 · N981Z · Doug DC931 · Fuselage Miscellaneous Structure
  > DURING OP 16 MAINT CHECK, FOUND A CRACK FROM RIVET HOLE LOWER FWD CORNER OF AFT CARGO DOOR CUT OUT. REMOVED LOWER SECTION OF DEPRESSOR, LOCATED AND DRILLED NEW DEPRESSOR, SEALED AND INSTALLED PER SPM 6-70-01, PAGE 3.
- [SDR TWAA9904206](https://openairdocs.org/sdr/TWAA9904206.md): Longeron · cracked · Mar 15, 1999 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > FOUND LONGERON 7R CRACKED AT STA 617,.375 INCH OUT OF BOLT HOLE. REMOVED CRACKED LONGERON FROM STA 610R TO 644R. REPAIRED PER SRM 53-2 FIG 18 AND STANDARD PRACTICES. CHECK-C 8-25-98 STL.
- [SDR TWAA9806401](https://openairdocs.org/sdr/TWAA9806401.md): Vane · separated · Apr 25, 1998 · N981Z · Doug DC931 · Turbine Engine Compressor Section
  > DTW - FLT 349 - RT ENGINE STALLED ON TAKEOFF ROLL. ABORTED TAKEOFF. SHUT ENGINE DOWN. TOWER REPORTED FIRE OUT TAIL PIPE. FIRE FIRE EXTINGUISHING BOTTLES. PASSENGERS EXITED FROM FWD EVACUATION SLIDES. REPLACED ENGINE. CHECK-C 5-22-97 STL. ONE EACH SEVEN
- [SDR TWAA9744001](https://openairdocs.org/sdr/TWAA9744001.md): Uplimit Switch · failed · Mar 31, 1997 · N981Z · Doug DC931 · Landing Gear Position and Warning
  > STL - FLT 565 - DURING CLIMB, FOLLOWING GEAR RETRACTION, NOSE GEAR UNSAFE LIGHT REMAINED ON. REMOVED AND REPLACED NOSE GEAR UPLIMIT SWITCH, MFG P/N H14-6, MANUFACTURED BY EATON CORP. OPERATION CHECK NORMAL. (M)
- [SDR 96ZZZM799](https://openairdocs.org/sdr/96ZZZM799.md): Power Supply · inoperative · Apr 1, 1996 · N981Z · Doug DC931 · Emergency Lighting
  > DURING A PREFLIGHT CHECK OF THE EMERGENCY EGRESS LIGHTS, THEY REMAINED ILLUMINATE. REMOVED AND REPLACED EGRESS POWER SUPPLY, MFG P/N 5322-2. OPERATIONAL CHECK NORMAL.
- [SDR 96ZZZM789](https://openairdocs.org/sdr/96ZZZM789.md): Longeron · corroded · Mar 20, 1996 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP-15, FOUND.75 INCH CRACK IN LONGERON 22L AND CORROSION AT STATION 190. REPAIRED BY INSTALLING NEW LONGERON AND HI-LOKS IN LONGERON 22L PER SRM 53-02, FIGURE 2.
- [SDR 96ZZZM788](https://openairdocs.org/sdr/96ZZZM788.md): Longeron · cracked · Mar 20, 1996 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP-15, FOUND A.75 INCH CRACK AT BELT RING ATTACH POINT OF LONGERON 23L, STATION 200. REPAIRED BY INSTALLING NEW LONGERON PER SRM 53-02, FIGURE 2.
- [SDR 96ZZZM791](https://openairdocs.org/sdr/96ZZZM791.md): Blkhd Web · cracked · Mar 13, 1996 · N981Z · Doug DC931 · Nacelle/Pylon, Bulkhead/Firewall
  > DURING OP-15, FOUND A SIX INCH CRACK AT LOWER OUTBOARD CORNER OF RIGHT FORWARD ENGINE MOUNT BULKHEAD WEB, STATION 965. REPAIRED PER SRM 53-03, FIGURE 21.
- [SDR 96ZZZM792](https://openairdocs.org/sdr/96ZZZM792.md): Angle · cracked · Mar 12, 1996 · N981Z · Doug DC931 · Nacelle/Pylon Structure
  > DURING OP-15, FOUND.75 INCH CRACK IN LEFT PYLON ATTACHED ANGLE VERTICAL LEG TOP SIDE, STATION 980. STOP DRILLED CRACK AND REPAIRED PER SRM 54-04.
- [SDR 96ZZZM782](https://openairdocs.org/sdr/96ZZZM782.md): Floorbeam · corroded · Mar 8, 1996 · N981Z · Doug DC931 · Fuselage Main, Floor Beam
  > DURING OP-15, FOUND CORROSION AROUND TWO ADJACENT NUT PLATES UPPER CAP, FLOORBEAM STATION 980, INBOARD OF CUSP ANGLE. REMOVED CORRODED AREAS AND INSTALLED REPAIR PER SRM 53-05, FIGURE 20A.
- [SDR 96ZZZM783](https://openairdocs.org/sdr/96ZZZM783.md): Longeron · corroded · Mar 7, 1996 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP-15, FOUND CORROSION AT LONGERON SPLICE OF LONGERON 30, STATION 400. REPAIRED BY INSTALLING NEW SECTION OF LONGERON PER ARA 10074 AND SRM 53-07, FIGURE 14. (M)
- [SDR 96ZZZM784](https://openairdocs.org/sdr/96ZZZM784.md): Longeron · cracked · Mar 5, 1996 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP-15, FOUND A ONE INCH CRACK IN E/E COMPARTMENT, STATION 160, LONGERON 25L, AT ATTACH POINT. REPAIRED PER SRM 53-02, PAGE 2A, FIGURE 2.
- [SDR 96ZZZM786](https://openairdocs.org/sdr/96ZZZM786.md): Longeron · cracked · Mar 2, 1996 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP-15, FOUND TWO CRACKS IN LONGERON 5R,.5 INCH AT STATION 699, AND.25 INCH AT STATION 737. REPAIRED BOTH PER SRM 53-02, FIGURE 2.
- [SDR 96ZZZM785](https://openairdocs.org/sdr/96ZZZM785.md): Longeron · cracked · Mar 2, 1996 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP-15, FOUND A.75 INCH CRACK IN LONGERON 4R, STATION 617. REPAIRED BY INSTALLING NEW SECTION OF LONGERON PER SRM 53-04.
- [SDR 96ZZZM790](https://openairdocs.org/sdr/96ZZZM790.md): Longeron · cracked · Mar 14, 1995 · N981Z · Doug DC931 · Fuselage Main, Longeron/Stringer
  > DURING OP-15, FOUND LONGERON 30 CRACKED APPROXIMATELY 10 INCHES FROM STATION 794, AFT TO SPLICE. REPLACED LONGERON 30 FROM STATION 756 TO 813 PER SRM 51-30 AND TWA STANDARD PRACTICES.

## 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 n_number = 'N981Z' AND deregistration_id = 'N981Z-2016-09-19'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N981Z-2016-09-19/reports

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