# Service difficulty reports: N301DL, cancelled Feb 21, 2008

A list on [N301DL, cancelled Feb 21, 2008](https://openairdocs.org/deregistered/N301DL-2008-02-21.md).

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

- [SDR DL73S060177](https://openairdocs.org/sdr/DL73S060177.md): Skin · cracked · Mar 10, 2006 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > THE FUSELAGE SKIN AT BS 787-807 & 400-420, S-4L WERE FOUND WITH CRACKS IN THE LAP JOINTS. THE CRACKED SKIN WAS REMOVED AND A REPAIR DOULBER WAS INSTALLED.
- [SDR DL73S050657](https://openairdocs.org/sdr/DL73S050657.md): Skin · cracked · Oct 25, 2005 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > A CRACK WAS FOUND IN THE FUSELAGE SKIN APPROX 2 INCHES LONG AT BS 765, S-19R. DOUBLER INSTALLED PER ER/A 451283-14, REF AD 2004-18-06 & 2005-13-30.
- [SDR DL73S041038](https://openairdocs.org/sdr/DL73S041038.md): Skin · cracked · Nov 16, 2004 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > A 1 INCH CRACK WAS FOUND IN THE CORNER OF THE LOWER HINGE CUTOUT OF THE L2 DOOR CUTOUT. THE CRACK WAS ROUTED OUT OF THE SKIN AND THE UNDERLYING BEARSTRAP INSPECTED TO ENSURE IT WAS CRACK FREE. THE SKIN CRACK CUTOUT WAS REPAIRED WITH AN EXTERNAL STEEL DOUBLER
- [SDR DL73S040953](https://openairdocs.org/sdr/DL73S040953.md): Floorbeam · cracked · Oct 7, 2004 · N301DL · Boeing 737232 · Fuselage Main, Floor Beam
  > INSPECTION OF THE LBL AND RBL 24.82 LONGITUDINAL FLOORBEAMS OVER THE CENTER WING REVEALED CRACKS IN THE BEAM WEB AND CAP AT THE AILERON QUADRANT CUTOUTS AT FS 679. THE CRACKS ARE TYPICAL OF AD 2001-17-18. THE CRACKED AREA WAS REPAIRED BY REPLACING THE BEAM
- [SDR DL73S040951](https://openairdocs.org/sdr/DL73S040951.md): Skin · cracked · Oct 7, 2004 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > THE LOWER AFT CORNER OF THE RIGHT WING SCANNING LIGHT CUTOUT AT FS 530 WAS FOUND WITH A.5 INCH CRACK IN THE SKIN. THE CRACK WAS REMOVED WITH A SMALL CUTOUT AND REPAIRED WITH AN EXTERNAL ALUMINUM REPAIR DOUBLER PER ER/A 094021-14.
- [SDR DL73S040846](https://openairdocs.org/sdr/DL73S040846.md): Charger · inoperative · Sep 4, 2004 · N301DL · Boeing 737232 · Emergency Lighting
  > EMERGENCY EXIT SIGN AT FWD LEFT DOOR AND OTHER LIGHTS ASSOCIATED WITH BATTERY PACK M1133 ARE INOP. FOUND THAT THIS BATTERY PACK WOULD NOT COMPLETELY SHUTOFF AND WAS DRAINING THE BATTERY. REPLACED THE RACK AND THE BATTERY. ALL NORMAL.
- [SDR DL73S040787](https://openairdocs.org/sdr/DL73S040787.md): Pump · malfunctioned · Aug 2, 2004 · N301DL · Boeing 737232 · Fuel Boost Pump
  > ON TAKEOFF NR 2 TANK FWD BOOST PUMP C/B POPPED. FWD NR 2 TANK FWD BOOST PUMP TO MCO/PLCRD PER MEL 28-00-01B. NOTE: NR 2 TANK AFT BOOST PUMP ON MCO/CNTRL C08194634. REPLACED NR 2 AFT BOOST PUMP, S/N 10131125BMANUF, P/N 258000-5. MCO/PLCRD REMOVED.
- [SDR DL73S040510](https://openairdocs.org/sdr/DL73S040510.md): Battery Pack · discharged · Jun 8, 2004 · N301DL · Boeing 737232 · Emergency Lighting
  > FORWARD EMERGENCY LIGHTS INOP. REPLACED BATTERY PACK.
- [SDR DL73S040454](https://openairdocs.org/sdr/DL73S040454.md): Connector · not seated · May 21, 2004 · N301DL · Boeing 737232 · Emergency Lighting
  > EMERGENCY EXIT LIGHT COME ON AND GO OUT OFF WITHOUT A POWER FAILURE. RESET PLUG ON E-PATH POWER SUPPLY. NO OCCURRENCE NOTED.
- [SDR DL73S040025](https://openairdocs.org/sdr/DL73S040025.md): Hose · leaking · Jan 10, 2004 · N301DL · Boeing 737232 · Hydraulic System, Main
  > LOSS OF A-SYSTEM HYDRAULICS IN FLIGHT. FOUND NR 2 ENGINE HYDRAULIC PUMP PRESSURE HOSE LEAKING. REPLACED NR 2 ENG HYDRAULIC PRESSURE HOSE. HOSE LEAK CHECKS GOOD. SERVICED A-SYSTEM HYDRAULICS TO FULL. SPUN & RAN ENGINE PRESSURE AND LEAK CHECK GOOD.
- [SDR DL73S031112](https://openairdocs.org/sdr/DL73S031112.md): Skin · cracked · Dec 18, 2003 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > INSPECTIONS REQUIRED PER AD 2003-08-15 REVEALED SEVERAL CRACKS IN THE STRINGER 4R SKIN LAP JOINT BETWEEN FS 380 & 420. THE CRACKS WERE REMOVED WITH CUTOUTS AND REPAIRED PER B737 SRM 53-30-3, 42. THE REPAIR WAS DOCUMENTED PER ER/A 087961-14AD.
- [SDR DL73S031109](https://openairdocs.org/sdr/DL73S031109.md): Skin · cracked · Dec 18, 2003 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > INSPECTION OF THE STRINGER 4R SKIN LAP JOINT REVEALED 15 CRACK INDICATIONS IN THE SKIN PANEL BETWEEN FS 540 & 727. THE INSPECTIONS WERE PERFORMED PER AD 2003-08-15. THE ENTIRE LAP JOINT WAS TRIMMED OUT AND REPAIRED PER BAC S/B 737-53A1177. THE REPAIR WAS DO
- [SDR DL73S031108](https://openairdocs.org/sdr/DL73S031108.md): Skin · cracked · Dec 17, 2003 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > INSPECTION OF THE STRINGER 4L SKIN LAP JOINT PER AD 2003-08-15 REVEALED A CRACKED FASTENER LOCATION AT FS 867. THE CRACK WAS REMOVED WITH A CUTOUT TO THE SKIN WITH ADDITIONAL INSPECTIONS TO ENSURE NO FURTHER CRACKS. THE AREA WAS REPAIRED PER B737 SRM 53-30-3
- [SDR DL73S030805](https://openairdocs.org/sdr/DL73S030805.md): Power Supply · discharged · Sep 2, 2003 · N301DL · Boeing 737232 · Emergency Lighting
  > DURING LAYOVER CHECK FOUND EMERGENCY ESCAPE PATH LIGHTING FROM ROW 11 THRU AFT CABIN BLINKING ON AND OFF WHEN THE SWITCH WAS OFF. REPLACED POWER SUPPLY (M9013) AND BATTERY PACK. ALL OPS NORMAL.
- [SDR DL73S030531](https://openairdocs.org/sdr/DL73S030531.md): Skin · debonded · Jun 9, 2003 · N301DL · Boeing 737232 · Trailing Edge Flaps
  > LT OUTBOARD AFT FLAP T/E WEDGE DISBONDED. T/E WEDGE REPAIRED PER ER/A 423067-14.
- [SDR DL73K030348](https://openairdocs.org/sdr/DL73K030348.md): Skin · cracked · Apr 9, 2003 · N301DL · Boeing 737232 · Wing, Plate/Skin
  > THE LT WING UPPER SKIN WAS FOUND WITH A 1.5 INCH CRACK EXTENDING FWD FROM THE AFT EDGE OF THE SKIN AT THE REAR SPAR AT WBL 170. THE CRACK WAS REMOVED WITHA 2 X 1 INCHES CUTOUT IN THE SKIN AND REPAIRED WITH 2 EXTERNAL ALUMINUM REPAIR DOUBLERS PER ER/A 384859-
- [SDR DL73K030312](https://openairdocs.org/sdr/DL73K030312.md): Wedge · delaminated · Mar 27, 2003 · N301DL · Boeing 737232 · Trailing Edge Flaps
  > RT INBOARD AFT FLAP T/E WEDGE DELAMINATED. REPAIRED PER ER/A 422903-14.
- [SDR DL73K020827](https://openairdocs.org/sdr/DL73K020827.md): Battery Pack · discharged · Jul 18, 2002 · N301DL · Boeing 737232 · Emergency Lighting
  > EMERGENCY LIGHT SWITCH OFF, AFT SEAT EMERGENCY LIGHTS STAY ON. REPLACED BATTERY PACK, OPS NORMAL.
- [SDR DL73K020529](https://openairdocs.org/sdr/DL73K020529.md): Skin · delaminated · May 10, 2002 · N301DL · Boeing 737232 · Trailing Edge Flaps
  > INBOARD AFT FLAP TRAILING EDGE BONDED ASSEMBLY WAS FOUND WITH SKIN TO CORE DELAMINATION. REPAIR PER ER/A 417316-14.
- [SDR DL73K020511](https://openairdocs.org/sdr/DL73K020511.md): Flap · delaminated · May 7, 2002 · N301DL · Boeing 737232 · Trailing Edge Flaps
  > LEFT INBOARD AFT FLAP TRAILING EDGE BONDED ASSY WAS FOUND WITH MULTIPLE DELAMINATED AREAS. REPAIR PER ER/A 417277-14.
- [SDR DL73K011684](https://openairdocs.org/sdr/DL73K011684.md): Mount · damaged · Oct 18, 2001 · N301DL · Boeing 737232 · Engine Mount Section
  > FWD ENGINE MOUNT SUPPORT FITTING ASSY WAS FOUND WITH OVERSIZED MOUNT HOLES. REPAIR PER ER/A 410550-14AD.
- [SDR DL73K011229](https://openairdocs.org/sdr/DL73K011229.md): Support Fitting · damaged · Jul 25, 2001 · N301DL · Boeing 737232 · Engine Mount Section
  > THE FWD ENGINE MOUNT SUPPORT FITTING ASSY WAS FOUND WITH DAMAGED MOUNT HOLES. THE HOLES WERE OVERSIZED TO CLEAN UP ALL DAMAGE. REPAIR PER ER/A 402105-14AD.
- [SDR DL73K010689](https://openairdocs.org/sdr/DL73K010689.md): Door Frame · cracked · Apr 28, 2001 · N301DL · Boeing 737232 · Fuselage Main, Structure
  > C2 CARGO DOOR OPENING FS 794.3, FWD FRAME FOUND WITH A 1.75 IN CRACK. THE CRACK IS TYPICALOF BAC S/B 737-53-1096 AND AD 93-14-10. THE CRACK WAS REMOVED WITH A 2.1 IN TRIMOUT AND REPAIRED WITH AN ALUMINUM DOUBLER PER THE B737 SRM AND ER/A 380692-14AD.
- [SDR DL73K010632](https://openairdocs.org/sdr/DL73K010632.md): Support Fitting · damaged · Apr 17, 2001 · N301DL · Boeing 737232 · Engine Mount Section
  > THE FWD ENGINE MOUNT SUPPORT FITTING WAS FOUND DAMAGED DUE TO MIGRATING BEARINGS FOR THE MOUNT HOLES. REPAIR PER ER/A 401670-14AD
- [SDR DL73K010474](https://openairdocs.org/sdr/DL73K010474.md): Mount · worn · Mar 23, 2001 · N301DL · Boeing 737232 · Engine Mount Section
  > FWD ENGINE MOUNT WAS FOUND WITH MIGRATING BEARINGS THAT RESULTED IN OVERSIZED MOUNT HOLES. REPAIR PER ER/A 401250-14AD
- [SDR DL73K010473](https://openairdocs.org/sdr/DL73K010473.md): Mount · worn · Mar 23, 2001 · N301DL · Boeing 737232 · Engine Mount Section
  > ENGINE MOUNT SUPPORT FITTING HAD MIGRATING BEARINGS RESULTING IN OVERSIZED MOUNT HOLES. REPAIR PER ER/A 401250-14AD.
- [SDR DL73K010406](https://openairdocs.org/sdr/DL73K010406.md): Skin · cracked · Mar 9, 2001 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > FUSELAGE / FS 1138 / STRG. 12R / HORIZ STAB CUTOUT: CRACK REPAIR INSPECTIONS OF THE FUSELAGE STRUCTURE AROUND THE HORIZONTAL STABILIZER CUTOUT PER BAC S/B 737-53-1134 REVEALED A.5 INCH CRACK IN THE SKIN AND UNDERLYING STRINGER STRAP JUST FWD OF FS 1138 AND J
- [SDR DL73K002511](https://openairdocs.org/sdr/DL73K002511.md): Valve · failed · Dec 25, 2000 · N301DL · Boeing 737232 · Cabin Compressor System
  > A/C FAILED TO PRESSURIZE. INSPA/C DOORS AND SEALS,RAN CABIN PRESSIZATION CHECK PER MM.PRESS A/C CHECK GOOD.REP RT PAC 35DEG SENSOR AND AIR MIX VLV,REMOVE MCO PLAC FRM RT PAC.RAN ENGS PRESS SYS CK GOOD.
- [SDR DL73K002250](https://openairdocs.org/sdr/DL73K002250.md): Module · worn · Nov 18, 2000 · N301DL · Boeing 737232 · Electrical Power System
  > DISCOVERED SEVERAL CHAFED AND BROKEN WIRES IN A BUNDLE PASSING UNDER THE A/C POWER CONTROL BOX MOUNTED BEHIND THE PILOT''S OVERHEAD INST PANEL. REPAIRED ASSOCIATED WIRING AND REPLACED THE A/C POWER CONTROL PANEL. NO FAULTS WERE DETECTED IN FLT DISC FOUND WH
- [SDR DL73K001784](https://openairdocs.org/sdr/DL73K001784.md): Indicator · malfunctioned · Sep 15, 2000 · N301DL · Boeing 737232 · Engine Oil Indicating System
  > NR 2 ENGINE OIL TEMP GAUGE READING ABOVE RED LIMIT ALL OTHER ENGINE INDICATIONS READ NORMAL. A/C DIVERTED TO ATL OFF FLT 2426. FOUND OIL TEMP GAUGE PEGGED HIGH. REPLACED OIL TEMP BULB, CKS GOOD.
- [SDR DL73K001187](https://openairdocs.org/sdr/DL73K001187.md): Acm · leaking · Jun 19, 2000 · N301DL · Boeing 737232 · Air Distribution System
  > AFTER LANDING, CABIN FILLED WITH SMOKE. SHUTOFF APU BLEED AND BOTH PACKS, SMOKE DISSIPATED. FOUND OIL COMING OUT OF LT ACM INTO DUCT. REPLACED ACM, BOTH LT AND RT WATER COALESCER BAGS. RAN BOTH PACKS WITH APU AND ENGS, LEAK CHECK OK. NO SMOKE IN CABIN NOT
- [SDR DL73K001006](https://openairdocs.org/sdr/DL73K001006.md): Smoke · detected · May 22, 2000 · N301DL · Boeing 737232 · Air Distribution System
  > TAXIING TO GATE, APU BLEED SOURCE SELECTED. RT PACK TURNED ON AND LITE SMOKE ENTERED CABIN. CONTRACT MTC. RAN APU FOR OVER AN HOUR WITH NO FURTHER FUMES/SMOKING. INSPECTED PACK BAY FOR ANY EVIDENCE OF HYDRAULIC LEAKS, NONE FOUND. UNABLE TO DUPLICATE PROBL
- [SDR DL73K991670](https://openairdocs.org/sdr/DL73K991670.md): Union · loose · Jul 25, 1999 · N301DL · Boeing 737232 · Hydraulic System, Main
  > LOST ALL 'A' SYSTEM HYDRAULIC FLUID. FOUND B-NUT LOOSE AT RT REV PRESSURE SWITCH, TIGHTENED SAME, CKS GOOD.
- [SDR DL73K982051](https://openairdocs.org/sdr/DL73K982051.md): Fuel Control · malfunctioned · Oct 3, 1998 · N301DL · Boeing 737232 · Fuel Control/Turbine Engines
  > NR 1 ENGINE COMPRESSOR STALLS AT FL370. AC YAWED LT EACH TIME AND N1 AND F/FLOW GAUGES FLUXED. N1 GAUGE WOULD SPIKE 5PC DROP. 5 SPIKES AT 1 SECOND INTERVALS. FLT DIVERSION TO MCO. INSP ENG COMPRESSOR AND EXH WITH BOROSCOPE. NO TROUBLE FOUND. CKED PS3 FI
- [SDR DL73K981778](https://openairdocs.org/sdr/DL73K981778.md): Skin · cracked · Aug 27, 1998 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > A CRACK WAS FOUND IN THE SKIN AT FS 520 AND STR 16L. THE UNDERLYING STRINGER WAS FOUND WITH A TYPICAL CRACK AT THE END OF THE STRINGER AS OUTLINED IN BAC S/B 737-53-1145. THE SKIN WAS REPAIRED WITH AN EXTERNAL DOUBLER PER SRM PROCEDURE AND THE STRINGER WAS R
- [SDR DL73K981151](https://openairdocs.org/sdr/DL73K981151.md): Light · inoperative · May 30, 1998 · N301DL · Boeing 737232 · Emergency Lighting
  > FOUND ON SVC CK, 2 FWD LT SIDE EXTERIOR EMERGENCY LIGHT INOP. REPLACED REFLECTOR AND SOCKET.
- [SDR DL73K980786](https://openairdocs.org/sdr/DL73K980786.md): Skin · lightning strike · Apr 8, 1998 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > THE WINDOW BELT SKIN BETWEEN FS 727 AND 777 WAS FOUND WITH SIX LIGHTNING STRIKE DAMAGE LOCATIONS. TWO OF THE LOCATIONS WERE REPAIRED BY DRILLING OUT AND INSTALLING.25 INCH DIA RIVETS PER THE B737 SRM. THE REMAINING LOCATIONS WERE BLENDED OR CUT OUT AND REP
- [SDR DL73K980784](https://openairdocs.org/sdr/DL73K980784.md): Bulkhead Web · cracked · Apr 8, 1998 · N301DL · Boeing 737232 · Fuselage Main, Bulkhead
  > THE FS 178 BULKHEAD WEB WAS FOUND WITH SEVERAL CRACKS IN THE AREA OF RBL 5.7 AND LBL 5.7 BETWEEN WL 190 AND 210. THE WEB STRAP AT RBL 5.7 WAS ALSO CRACKED. THE CRACKS WERE CUT OUT AND A SINGLE WEB DOUBLER INSTALLED TO ENCOMPASS ALL OF THE CUT OUTS. THE STRA
- [SDR DL73K970342](https://openairdocs.org/sdr/DL73K970342.md): Batteries · discharged · Feb 23, 1997 · N301DL · Boeing 737232 · Emergency Lighting
  > ON MAINTENANCE CHECK, FOUND FWD GALLEY OUTBOARD POSITION EMERGENCY FLASHLIGHT INDICATOR LED NOT FLASHING. REPLACED BATTERY AND BULB.
- [SDR DL73K962513](https://openairdocs.org/sdr/DL73K962513.md): Light · failed · Nov 12, 1996 · N301DL · Boeing 737232 · Emergency Lighting
  > EXTERIOR EMERGENCY LIGHT AT L1 DOOR INOP.
- [SDR DL73S960742](https://openairdocs.org/sdr/DL73S960742.md): Skin · cracked · Mar 29, 1996 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > A CRACK WAS FOUND IN THE LOWER AFT CORNER OF THE R-1 DOOR. THE SKIN PANEL AND THE BONDED DOUBLER AT THIS REGION WAS REPLACED. THERE WAS STILL A CRACK IN THE BEAR STRAP. THE CRACK IN THE BEAR STRAP WAS CUT OUT WHILE PERFORMING A REPAIR FOR THIS CORNER PER SR
- [SDR DL73S961624](https://openairdocs.org/sdr/DL73S961624.md): Bulkhead Web · cracked · Mar 23, 1996 · N301DL · Boeing 737232 · Fuselage Main, Bulkhead
  > DURING INSPECTION PER SI 3-69482-12, THE WEB OF FS 178 BULKHEAD WAS FOUND WITH FOUR CRACKS, EACH MEASURING APPROX 1 INCH, AT LBL 5.7 AND WL 195 AND RBL 5.7 AND WL 195. THE WEB IS MANUFACTURED FROM 0.040 CLAD 2024-T3, ER/A ISSUED FOR REPAIR.
- [SDR DL73S960652](https://openairdocs.org/sdr/DL73S960652.md): Skin · cracked · Mar 20, 1996 · N301DL · Boeing 737232 · Fuselage Main, Plate/Skin
  > THE SKIN AT THE COOLING DUCT CUTOUT, BS 379 BL 0 WAS FOUND CRACKED AT THE AFT EDGE OF THE CUTOUT. THE CRACK IS APPROX 1.5 INCH IN LENGTH AND IS TYPICAL OF CRACKS DESCRIBED IN BACO SB 737-53-1117 R1. CRACK FOUND AT MID VISIT IN ATL. THE CRACK WILL BE STOP DR
- [SDR DL73S954627](https://openairdocs.org/sdr/DL73S954627.md): Spring · broken · Nov 25, 1995 · N301DL · Boeing 737232 · Aileron Control System
  > WHEN MAKING TURNS, CONTROL YOKE DOES NOT RETURN TO CENTER. IT MUST BE MANUALLY CENTERED. ROUND AILERON RETURN SPRINGS FOR MANUAL YOKE CENTERING BROKEN. REPLACED SPRINGS. OPERATION NORMAL.

## 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 = 'N301DL' AND deregistration_id = 'N301DL-2008-02-21'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N301DL-2008-02-21/reports

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.