# Service difficulty reports: N521DA, cancelled Jul 20, 2010

A list on [N521DA, cancelled Jul 20, 2010](https://openairdocs.org/deregistered/N521DA-2010-07-20.md).

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

- [SDR DL72S021449](https://openairdocs.org/sdr/DL72S021449.md): Skin · cracked · Dec 13, 2002 · N521DA · Boeing 727232 · Fuselage Main, Plate/Skin
  > FUSELAGE / SKIN / FS 681-740 / STRG. 4R / SKIN LAP JOINT: CRACK REPAIR LFEC INSPECTION OF THE STRINGER 4R SKIN LAP JOINT BETWEEN FS 681 & 740 GAVE CRACK INDICATIONS. INTERNAL MFEC INSPECTIONS CONFIRME
- [SDR DL72S021436](https://openairdocs.org/sdr/DL72S021436.md): Skin · cracked · Dec 10, 2002 · N521DA · Boeing 727232 · Fuselage Main, Plate/Skin
  > FUSELAGE / SKIN / FS 481-681 / STRG. 4R / SKIN LAP JOINT: CRACK REPAIR LFEC INSPECTION OF THE STRINGER 4R LAP JOINT REVEALED CRACK INDICATIONS BETWEEN FS 481 & 681. INTERNAL MFEC INSPECTION CONFIRMED A TOTAL OF
- [SDR DL72S020510](https://openairdocs.org/sdr/DL72S020510.md): Battery Pack · discharged · May 6, 2002 · N521DA · Boeing 727232 · Emergency Lighting
  > COCKPIT L1 AND L2 EMERGENCY EXIT LIGHTS INOP DUE TO BATTERY FAIL. REPLACED SAME, CHECKS OK.
- [SDR DL72S020023](https://openairdocs.org/sdr/DL72S020023.md): Angle · cracked · Jan 8, 2002 · N521DA · Boeing 727232 · Wing Structure
  > 1/8 IN CRACK COVE SKIN ATTACH ANGLE BELOW TAI DUCT NBR 2 SLAT REPAIR PER MM 57-54-000-8
- [SDR DL72S011271](https://openairdocs.org/sdr/DL72S011271.md): Engine · making metal · Aug 1, 2001 · N521DA · Boeing 727232 · Engine (Turbine/Turboprop)
  > NR 1 ENG OIL FILTER BYPASS LT ILLUM. C/W POM PROCEDURE. LT DID NOT GO OUT. ENG SHUTDOWN. CA REPLACED NR 1 ENG OIL FILTER, LK CK GOOD. FOUND METAL ON MAIN OIL CHIP DET. PERFORMED ENG PENALTY RUN PER M/M. ON RE-INSP OF CHIP DET FOUND METAL AGAIN. REPLACED NR 1 E
- [SDR DL72S010877](https://openairdocs.org/sdr/DL72S010877.md): Door Frame · cracked · May 31, 2001 · N521DA · Boeing 727232 · Service Doors
  > R1 DOOR AFT FRAME IS CRACKED AT LWR STOP FITTING. REPAIRED PER M/M 52-12-000-8.
- [SDR DL72S010752](https://openairdocs.org/sdr/DL72S010752.md): Battery Pack · defective · May 12, 2001 · N521DA · Boeing 727232 · Emergency Lighting
  > LT AFT EMERGENCY LIGHT FLICKERS ON AND OFF. REPLACED BATTERY PACK.
- [SDR DL72S010751](https://openairdocs.org/sdr/DL72S010751.md): Power Supply · malfunctioned · May 12, 2001 · N521DA · Boeing 727232 · Emergency Lighting
  > LT OVERWING EMERGENCY LIGHT STAYS ON WITH EMERGENCY LIGHT SW OFF. REPLACED POWER SUPPLY RACK.
- [SDR DL72S010213](https://openairdocs.org/sdr/DL72S010213.md): Stringer · cracked · Jan 21, 2001 · N521DA · Boeing 727232 · Fuselage Main, Longeron/Stringer
  > CRACKED STRINGER 28R O/B FLANGE JUST FWD OF STA 990. INSTALLED REPAIR AS PER DRD 53-10-11D.
- [SDR DL72S010093](https://openairdocs.org/sdr/DL72S010093.md): Skin · damaged · Jan 19, 2001 · N521DA · Boeing 727232 · Trailing Edge Flaps
  > NR 3 MID FLAP INBOARD UPPER SKIN PANEL WAS FOUND DAMAGED. REPAIRED PER ER/A 397199-14.
- [SDR DL72S002464](https://openairdocs.org/sdr/DL72S002464.md): Light · inoperative · Dec 16, 2000 · N521DA · Boeing 727232 · Emergency Lighting
  > IR: RI DOOR OVERHEAD EMER LIGHT INOP. CA: REPLACED LIGHT ASSY CKS GOOD.
- [SDR DL72K001715](https://openairdocs.org/sdr/DL72K001715.md): Battery · inoperative · Sep 6, 2000 · N521DA · Boeing 727232 · Emergency Lighting
  > ON L/O, FOUND FWD RIGHT OVERWING EXIT EMERGENCY SIGN INOP. REMOVED AND REPLACED BATTERY TRAY ASSY PER M/M, OPS CKS GOOD.
- [SDR DL72K001310](https://openairdocs.org/sdr/DL72K001310.md): Engine · flamed out · Jul 11, 2000 · N521DA · Boeing 727232 · Engine (Turbine/Turboprop)
  > NR 2 ENGINE FLAMED OUT ON LANDING. REPLACED ENGINE.
- [SDR DL72K000203](https://openairdocs.org/sdr/DL72K000203.md): Le Flap · separated · Jan 27, 2000 · N521DA · Boeing 727232 · Leading Edge Devices
  > AFTER T/O FROM DCA, FLAPS DID NOT RETRACT PAST 2 DEGREE POSITION. A/C DIVERTED TO IAD. MTC IN IAD FOUND LT O/B FOREFLAP BROKEN FREE FROM I/B CARRIAGE. REPLACED FOREFLAP.
- [SDR DL72K992664](https://openairdocs.org/sdr/DL72K992664.md): Skin · dented · Dec 6, 1999 · N521DA · Boeing 727232 · Fuselage Main, Plate/Skin
  > THE FUSELAGE SKIN WAS BADLY DAMAGED BY CONTACT WITH GROUND EQUIPMENT. THE SECTION OF SKIN BETWEEN FS 416 & FS 484 AND BELOW STRINGER 22R WAS CUTOUT. NEW SECTIONS OF SKIN WERE INSTALLED WITH AN EXTERNAL ALUMINUM SPLICE STRAP PER ER/A 368846-14AD, REV A.
- [SDR DL72K992663](https://openairdocs.org/sdr/DL72K992663.md): Frame · cracked · Dec 6, 1999 · N521DA · Boeing 727232 · Fuselage Main, Frame
  > THE FUSELAGE WAS BADLY DAMAGED BY GROUND EQUIPMENT RESULTING IN DENTING AND CRACKING OF THE FS 440 & FS 460 FRAMES BETWEEN STRINGERS 22R & 26R. THE DAMAGED SECTIONS OF FRAMES WERE CUT OUT AND NEW SECTIONS INSTALLED WITH NEW FORMED SHEET ALUMINUM SPLICES
- [SDR DL72K991907](https://openairdocs.org/sdr/DL72K991907.md): Battery Pack · discharged · Aug 26, 1999 · N521DA · Boeing 727232 · Emergency Lighting
  > EXT EXIT LIGHT INOP. REPLACED BATTERY PACK, EXIT LIGHT CHECKS OK.
- [SDR DL72K991851](https://openairdocs.org/sdr/DL72K991851.md): Pump · failed · Aug 18, 1999 · N521DA · Boeing 727232 · Hydraulic Pump (Electric/Engine), Main
  > UPON DEPARTURE FROM BOS, HYD SYS B LOST ALL PRESS AND QTY WENT TO 1.5 GALS, FOLLOWED POM. FOUND OUTBOARD MOTOR PUMP LEAKING. REPLACED SAME.
- [SDR DL72K991441](https://openairdocs.org/sdr/DL72K991441.md): Acm · seized · Jun 26, 1999 · N521DA · Boeing 727232 · Cabin Cooling System
  > PASSENGER REPORTS SMOKE IN CABIN AFTER GEAR AND FLAP EXTENSION. RT PACK IND 40 DEG WHEN IN FULL COLD. FOUND RT ACM SEIZED. REPLACED RT ACM, CKS GOOD.
- [SDR DL72S991243](https://openairdocs.org/sdr/DL72S991243.md): Chord · damaged · Jun 3, 1999 · N521DA · Boeing 727232 · Wing Miscellaneous Structure
  > INSPECTIONS PER 4-58560-12AD, FOUND 4 FASTENER HOLES WITH TOOLING DAMAGE. NO CRACK INDICATIONS WERE NOTED. REPAIRED PER ERA 333191-14AD, REV A.
- [SDR DL72S991233](https://openairdocs.org/sdr/DL72S991233.md): Skin · cracked · Jun 2, 1999 · N521DA · Boeing 727232 · Vertical Stabilizer
  > SKIN CRACKED FS 1340 VENTRAL STAB SKIN IS CRACKED RT SIDE. FABRICATED DOUBLER PER M/M 55-30-0 FIG 801. PERFORMED DYE CHECK PER PS 900-6-3 NR 1. NO CRACKS FOUND PAST FASTENER HOLE. OK TO INSTALL REPAIR. INSTALLED REPAIR PER M/M 55-30-0 PG 801.
- [SDR DL72S990776](https://openairdocs.org/sdr/DL72S990776.md): Filter · dirty · Apr 10, 1999 · N521DA · Boeing 727232 · Turbine Engine Oil System
  > OIL FILTER BYPASS LIGHT ILLUMINATED ON T/O, REDUCED PWR FOR CLIMB AND LIGHT WENT OUT. DURING CRUISE, LIGHT CAME BACK ON, PULLED THROTTLES BACK AND LIGHT WENT OUT. SHORT TIME LATER, LIGHT CAME ON WITH THROTTLES AT IDLE. CREW SHUTDOWN PER POM. REPLACED OIL F
- [SDR DL72S982290](https://openairdocs.org/sdr/DL72S982290.md): Angle · cracked · Nov 7, 1998 · N521DA · Boeing 727232 · Fuselage Miscellaneous Structure
  > HORIZ TORQUE BOX ANGLE CRACKED STA 1263 BELOW FWD END OF ACTUATOR PAD. HORIZ GUSSET ANGLE CRACKED STA 1263 BELOW ACTUATOR PAD. REPLACED ANGLE AND GUSSET PER SRM 53-10-10 FIG 1-3.
- [SDR DL72S980697](https://openairdocs.org/sdr/DL72S980697.md): Bushing · worn · Mar 28, 1998 · N521DA · Boeing 727232 · Horizontal Stabilizer Structure
  > LT HORIZ STAB NR 1 HINGE ATT PT FUS ELEV, FITTING AND BUSHINGS ARE WORN. SPOTFACE I/B FACE OF O/B LUG.012 REMOVED BUSHINGS, CLEANED LUG WITHIN LIMITS PER MM 55-50-0 FIG 801. ROTOPEENED PER PS900-4 TREAT FACES AND BORES. PAINTED FACES AND BORES. TURNED BUS
- [SDR DL72S980775](https://openairdocs.org/sdr/DL72S980775.md): Doubler · cracked · Mar 27, 1998 · N521DA · Boeing 727232 · Trailing Edge Flaps
  > AFT SPAR CHORD DOULBER CRACKED TWO PLACES 34 FROM I/B END OF NR 3 MIDFLAP. REPLACED DOULBER PER BOEING M/M 57-52-0 FIG 802..
- [SDR DL72S981448](https://openairdocs.org/sdr/DL72S981448.md): Angle · cracked · Mar 26, 1998 · N521DA · Boeing 727232 · Trailing Edge Flaps
  > LOWER AFT CHORD ANGLE IS CRACKED AT 19, 22, 32, 37, 54 AND 59 FORM I/B END OF FLAP. REPAIR PER M/M 57/52/0 FIG 802.
- [SDR DL72S980727](https://openairdocs.org/sdr/DL72S980727.md): Frame · cracked · Mar 25, 1998 · N521DA · Boeing 727232 · Fuselage Main, Frame
  > AT HMV, FOUND FS 930 LT SIDE FRAME IS CRACKED 10 INCH BELOW CABIN WINDOW. FABRICATED NEW PARTS SRM 53-10-4, PAINTED/INSTLD COMPLETED PER SAME.
- [SDR DL72S980696](https://openairdocs.org/sdr/DL72S980696.md): Bushing · worn · Mar 24, 1998 · N521DA · Boeing 727232 · Horizontal Stabilizer Structure
  > BUSHINGS WORN RT HORZ STAB. NR 1 HINGE ATTACH PT FOR ELEV FITTING BUSHINGS ARE WORN. ALSO, HARDWARE IS WORN AND FITTING LUGS ARE WORN. SPOTFACED.013 ON D/B FACE OF I/B LUG AND.010 ON I/B FACE OF O/B LUG. REMOVED BUSHINGS AND CLEANED LUGS WITHIN LIMITS PE
- [SDR DL72S980686](https://openairdocs.org/sdr/DL72S980686.md): Angle · part · Mar 22, 1998 · N521DA · Boeing 727232 · Fuselage Miscellaneous Structure
  > ANGLE CRACKED STA 303.9 FWD CABIN LBL 28. REPLACED ANGLE PER SRM 51- 00.
- [SDR DL72S972288](https://openairdocs.org/sdr/DL72S972288.md): Batteries · discharged · Nov 7, 1997 · N521DA · Boeing 727232 · Emergency Lighting
  > AISLE EMERGENCY LIGHT AT ROW 25 INOP. REPLACED BATTERIES.
- [SDR DL72S971963](https://openairdocs.org/sdr/DL72S971963.md): Beam · cracked · Oct 2, 1997 · N521DA · Boeing 727232 · Fuselage Miscellaneous Structure
  > FOUND DURING LETTER CHECK, A1-AFT BEAM RUNNING INBD AND OUTBD CRACKED AT STA 1273 VENTRAL STAIR TORQUE BOX. REPAIRED PER OPN 5967AD.
- [SDR DL72S971962](https://openairdocs.org/sdr/DL72S971962.md): Chord · cracked · Oct 2, 1997 · N521DA · Boeing 727232 · Fuselage Miscellaneous Structure
  > FOUND DURING LETTER CHECK, A1 INBD CHORD BELOW VENTRAL STAIRS ACTUATOR CRACKED. REPAIRED PER OPN 5967AD.
- [SDR DL72S971961](https://openairdocs.org/sdr/DL72S971961.md): Stiffener · cracked · Oct 2, 1997 · N521DA · Boeing 727232 · Wing Miscellaneous Structure
  > FOUND ON A1 LETTER CK, LEADING EDGE SPAR STIFFENER CRACKED 1.25 INCH AT NR 7 SLAT INBD TRACK INBD SIDE. REPAIRED PER MM 57-20-21.
- [SDR DL72S970454](https://openairdocs.org/sdr/DL72S970454.md): Stringer · cracked · Mar 10, 1997 · N521DA · Boeing 727232 · Vertical Stabilizer
  > FOUND ON LETTER CHECK,.75 INCH CRACK IN VERTICAL STABILIZER S-9 AT FOURTH BULKHEAD ABOVE CRAWL-WAY OPENING. REPAIRED PER MM 55-30-0.
- [SDR DL72S962089](https://openairdocs.org/sdr/DL72S962089.md): Light · inoperative · Sep 9, 1996 · N521DA · Boeing 727232 · Emergency Lighting
  > FOUND C/P O/HEAD EMERGENCY LITE INOP. RPLCD BATTERIES AND TAG.
- [SDR DL72S961852](https://openairdocs.org/sdr/DL72S961852.md): Skin · corrosion · Aug 2, 1996 · N521DA · Boeing 727232 · Fuselage Main, Plate/Skin
  > FOUND CORROSION IN THE AFT LAVATORY SERVICE PANEL CUTOUT. LOCATED JUST AFT OF STA 1166. REPAIRED IN ACCORDANCE WITH FAA/DER FORM 8110-3, DER DESIGNATION SO-831, DATED AUGUST 2, 1996.
- [SDR DL72S961770](https://openairdocs.org/sdr/DL72S961770.md): Trunnion · corroded · Jul 18, 1996 · N521DA · Boeing 727232 · Wing, Landing Gear Attach Fittings
  > FOUND CORROSION ON LEFT MLG FORWARD TRUNNION BORE AND FACE. REPAIRED PER DELTA ERA 303917-14.
- [SDR DL72S961780](https://openairdocs.org/sdr/DL72S961780.md): Web · cracked · Jul 16, 1996 · N521DA · Boeing 727232 · Vertical Stabilizer
  > FOUND CRACK AT 1303 B/H STR CUTOUT LEFT SIDE INSIDE VERTICAL STABILIZER JUST ABOVE 'S' DUCT. REPAIRED PER SRM 53-10-4.
- [SDR DL72S961736](https://openairdocs.org/sdr/DL72S961736.md): Rib · cracked · Jul 16, 1996 · N521DA · Boeing 727232 · Leading Edge Devices
  > RIB CRACKED NR 3 L/E SLAT, O/B OF ACTUATOR ATTACH BRACKET O/B RIB. FABRICATED REPAIR PER MM 57-54-0 PG 804.
- [SDR DL72S961734](https://openairdocs.org/sdr/DL72S961734.md): Bracket · cracked · Jul 16, 1996 · N521DA · Boeing 727232 · Leading Edge Devices
  > FOUND CRACK ON I/B ACTUATOR BRACKET FOR THE NR 2 L/E K-FLAP. REPAIRED PER M/M 57-20-21 FIG 807 AND INSTALLED PER M/M 57-20-21 PG 811.
- [SDR DL72S961680](https://openairdocs.org/sdr/DL72S961680.md): Bulb · corroded · Jul 12, 1996 · N521DA · Boeing 727232 · Emergency Lighting
  > ON LAYOVER, FOUND L-1 DOOR EMERGENCY LIGHT INOP. RELAMPED, CHECKS GOOD.
- [SDR DL72S960236](https://openairdocs.org/sdr/DL72S960236.md): Fuel Pump · failed · Jan 30, 1996 · N521DA · Boeing 727232 · Engine Fuel Distribution
  > ON TAKEOFF ROLL CVG AT 78 KTS, NR 2 ENGINE APPEARED TO FLAME, ALL ENGINE INST ROLLED BACK. REJECTED TAKEOFF AND RETURNED TO GATE. INSPECTED INTAKE AND EXHAUST, PULLED OIL FILTER, ALL CHECKS OK. FOUND NO FUEL FLOW TO ENGINE. REPLACED FUEL CONTROL AND FUEL P
- [SDR DL72S954728](https://openairdocs.org/sdr/DL72S954728.md): Stringer · cracked · Dec 18, 1995 · N521DA · Boeing 727232 · Vertical Stabilizer
  > FOUND DURING E-2 LETTER CHECK, VERTICAL STAB STRINGERS CRACKED, STR 8 RIGHT STA 133.8 AND STR 9 RIGHT STA 133.8. REPAIRED PER M/M 53-30-0 PAR 3.
- [SDR DL72S954727](https://openairdocs.org/sdr/DL72S954727.md): Angle · cracked · Dec 18, 1995 · N521DA · Boeing 727232 · Leading Edge Devices
  > FOUND DURING E-2 LETTER CHECK, NR 2 L/E SLAT COVE SKIN ATTACH ANGLE CRACKED UNDER TAI DUCT. REPAIRED PER M/M 57-54-0.
- [SDR DL72S953536](https://openairdocs.org/sdr/DL72S953536.md): Skin · cracked · Aug 29, 1995 · N521DA · Boeing 727232 · Cargo/Baggage Doors
  > C-2 DOOR SKIN CRACKED IN 2 PLACES AT UPPER EDGE 15 INCHES FWD OF AFT CORNER. REPAIRED PER SRM 52-00-3, FIG 3.
- [SDR DL72S953548](https://openairdocs.org/sdr/DL72S953548.md): Blkhd Stiffener · cracked · Aug 28, 1995 · N521DA · Boeing 727232 · Fuselage Main, Bulkhead
  > AT CV3 IN ATL, A CRACK WAS FOUND EMANATING FROM THE BOTTOM OF THE LT FLANGE ON THE FS 1183 BULKHEAD VERTICAL STIFFENER AT RBL 8. THE CRACK WAS 1 INCH LONG. REPAIRED DAMAGE PER DL ERA 302413-14AD. AUTHORIZED BY B727-53-0175 REV. 2.
- [SDR DL72S953547](https://openairdocs.org/sdr/DL72S953547.md): Skin · dented · Aug 28, 1995 · N521DA · Boeing 727232 · Fuselage Main, Plate/Skin
  > DURING CV3 IN ATL, THE FUSELAGE SKIN WAS DENTED IN TWO PLACES AT FUSELAGE STATION 1323, STR 21L. IN ACCORDANCE WITH B727 SRM 53-30-3, FIGURE 3, AN EXTERNAL REPAIR DOUBLER WAS INSTALLED.
- [SDR DL72S950214](https://openairdocs.org/sdr/DL72S950214.md): Center Frame · cracked · Jan 2, 1995 · N521DA · Boeing 727232 · Galley Doors
  > DURING SHOP INSPECTION, THE AFT CENTER FRAME ON FWD GALLEY DOOR WAS FOUND CRACKED. REPAIRED PER SRM 51-40-3.

## 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 = 'N521DA' AND deregistration_id = 'N521DA-2010-07-20'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N521DA-2010-07-20/reports

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