# Service difficulty reports: N251AK

A list on [N251AK](https://openairdocs.org/aircraft/N251AK.md).

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

- [SDR ASAA2026042065635](https://openairdocs.org/sdr/ASAA2026042065635.md): Battery Pack · inoperative · Apr 20, 2026 · N251AK · Boeing 737990ER · Emergency Lighting
  > INTERIOR EMER LIGHTS BETWEEN ROW 1-11 ON LH SIDE INOP. GROUNDED - YES. REPLACED LH ROW 1-11 EMER LIGHT BATTERY PACK IAW AMM 33-51-06. OPS CHECK GOOD. 4APR676B.
- [SDR ASAA2026021464413](https://openairdocs.org/sdr/ASAA2026021464413.md): Baffle · cracked · Feb 14, 2026 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > FWD PIT R/H BAFFLE CORRODED AND HAS ELONGATED HOLE BETWEEN STATIONS 500F AND 500G. GROUNDED - YES. INTERCOSTAL FOUND TO BE CRACKED IAW B737-900 SRM 53-00-53-1A-2. DEEMED TO BE OUT OF LIMITS RH STA 500F - 500G NO CRACKS PERMITTED DETAIL D VIEW A-A. REMOVED DAMA
- [SDR ASAA2026021364445](https://openairdocs.org/sdr/ASAA2026021364445.md): Transition Panel · corroded · Feb 13, 2026 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > WHILE GAINING ACCESS TO REPLACE BONDED NUTPLATES AT STA 500J; FOUND R/H TRANSITION PANEL CORRODED FROM STATIONS 500H TO 500L RBL 25. GROUNDED - YES. REMOVED CORROSION AND FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 ORIGINAL THICKNESS.040, MATERIAL REMOVED
- [SDR ASAA2026022364444](https://openairdocs.org/sdr/ASAA2026022364444.md): Intercostal · corroded · Feb 13, 2026 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > WHILE GAINING ACCESS TO REPLACE BONDED NUTPLATES AT BS 500J, FOUND RT BAFFLE CORRODED BETWEEN BS 500I - 500J. GROUNDED - YES. REMOVED CORROSION BETWEEN BS 500I - 500J, RT BAFFLE, ORIGINAL MATERIAL 0.020", REMOVED 0.020", L=0.500", W=0.500" FOUND TO BE OUT O
- [SDR ASAA2026022364443](https://openairdocs.org/sdr/ASAA2026022364443.md): Support Angle · corroded · Feb 13, 2026 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > FWD CARGO AFT BULKHEAD BS 500L RT SIDEWALL SUPPORT ANGLE CORRODED AT RBL 25. GROUNDED - YES. REMOVED CORROSION AND CHECKED LIMIT. FOUND TO BE OUT OF LIMITS IAW SRM 53-30-08. BLEND OUT EXCEEDED MINIMUM OF.056 SPECIFIED IAW SRM 53-30-08, FIG 103, DETAIL C,
- [SDR ASAA2026020664210](https://openairdocs.org/sdr/ASAA2026020664210.md): Sign · no discrepancy · Feb 6, 2026 · N251AK · Boeing 737990ER · Emergency Lighting
  > EMERGENCY EXIT SIGN ABOVE 17F IS INTERMITTENT. GROUNDED - YES. INSPECTED AND OPS CHECKED EMERGENCY EXIT LIGHT IAW AMM 33-50-00. OPS CHKD GOOD.
- [SDR ASAA2025040757288](https://openairdocs.org/sdr/ASAA2025040757288.md): Power Supply · inoperative · Apr 7, 2025 · N251AK · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1670 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED EMER LIGHT PWR SUPPLY AT M1670 IAW B737NG AMM 33-51-06-960-806 OPS CK GOOD. (S/N 132117)
- [SDR ASAA2025040757287](https://openairdocs.org/sdr/ASAA2025040757287.md): Power Supply · inoperative · Apr 7, 2025 · N251AK · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1671 INOP. GROUNDED - YES. RMOVED AND REPLACED EMER LIGHT PWR SUPPLY AT M1671 IAW B737NG AMM33-51-06-960-806. OPS CK GOOD. (S/N 130934)
- [SDR ASAA2025040757286](https://openairdocs.org/sdr/ASAA2025040757286.md): Power Supply · inoperative · Apr 7, 2025 · N251AK · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1676 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED EMER LIGHT PWR SUPPLY AT M1676 IAW B737NG AMM33-51-06-960-806.3 OPS CK GOOD. (S/N 132243)
- [SDR ASAA2025032957372](https://openairdocs.org/sdr/ASAA2025032957372.md): Strap · corroded · Mar 29, 2025 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > AFT BAG PIT DOOR SURROUND FLOOR STRUCTURE JUST INSIDE DOOR ON AFT END CORRODED AT SCREWHOLE. GROUNDED - YES. REMOVED CORROSION, ORIG THICKNESS=0.100"; REMOVED:0.15"; REMAINING:0.85" FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-60-15-1A-1. REMOVED DAMAGED TH
- [SDR ASAA2025032957313](https://openairdocs.org/sdr/ASAA2025032957313.md): Web · corroded · Mar 29, 2025 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > AFT BAG PIT DOOR SURROUND, FLOOR JUST INSIDE DOOR CORRODED ACROSS ENTRYWAY. GROUNDED - YES. REMOVED CORROSSION ORIG. THICKNESS=.050" REMOVED=.014" REMAINING=.036. FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-60-15-1A-1. REMOVED AFT PIT THRESHOLD WEB, LOCA
- [SDR ASAA2025032957290](https://openairdocs.org/sdr/ASAA2025032957290.md): Web · corroded · Mar 29, 2025 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > FORWARD CARGO DOOR SILL HAS CORROSION IN MULTIPLE AREAS. GROUNDED - YES. REMOVED CORROSION ON FWD CARGO DOOR THRESHOLD WEB ORIGINAL MAT=.045 MAT REMOVED.007 REMAINING=.038 FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-30-15. REMOVED DAMAGE WEB LOCATED AND D
- [SDR ASAA2025032457018](https://openairdocs.org/sdr/ASAA2025032457018.md): Floor Panel · delaminated · Mar 24, 2025 · N251AK · Boeing 737990ER · Fuselage Floor Panel
  > MAIN CABIN OVERWING BOX CENTER FLOOR PANEL PN 144A5810-127 HAS DELAMINATION. GROUNDED - YES. REPAIRED MAIN CABIN FLOOR PANEL P/N 144A5810-127 BY PERFORMING A PERMANENT WET LAY UP REPAIR TO FACESHEET IAW B737 SRM 53-00-50-2R-0.
- [SDR ASAA2024050549503](https://openairdocs.org/sdr/ASAA2024050549503.md): Gasket · damaged · May 5, 2024 · N251AK · Boeing 737990ER · Fuel Controlling System
  > #2 ENGINE FAILURE ON DEPARTURE BETWEEN 8-9K FEET. ENG FAIL LIGHT ANNUNCIATED. NO AIRFRAME VIBRATIONS FELT. ATTEMPTED XB-RELIGHT, UNSUCCESSFUL RETURNED TO DEPARTURE AIRPORT FOR OVERWEIGHT LANDING. NO HARD LANDING EXPERIENCE CFT NOTED SLIGHT LEAK OF FUEL NEAR #2
- [SDR ASAA2024031548438](https://openairdocs.org/sdr/ASAA2024031548438.md): Power Supply · inoperative · Mar 15, 2024 · N251AK · Boeing 737990ER · Emergency Lighting
  > R2 AREA EMERGENCY EXIT LIGHTS ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1672 IAW B737NG AMM 33-51-06-960-806. OPS CHECK GOOD.
- [SDR ASAA2024030848323](https://openairdocs.org/sdr/ASAA2024030848323.md): Power Supply · inoperative · Mar 8, 2024 · N251AK · Boeing 737990ER · Emergency Lighting
  > CUSTOMER WALK: EMERGENCY LIGHTS INOP AT FLIGHT DECK DOOR OVERHEAD AND L-1 DOOR. GROUNDED - YES. REMOVED & REPLACED EMERGENCY EXIT POWER SUPPLY M1675 & INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-06-960-806.
- [SDR ASAA2022090839905](https://openairdocs.org/sdr/ASAA2022090839905.md): Acm · odor · Sep 8, 2022 · N251AK · Boeing 737990ER · Cabin Cooling System
  > PACKS CIRCULATE AIR THAT SMELLS LIKE "DIRTY SOCKS" ESPECIALLY AT LOW ALTITUDES AND ON THE GROUND. IT IS WORST AT LOW POWER SETTINGS (IE ON TAXI AND APPROACH) BUT CAN ALSO BE SMELLED ON DEPARTURE. SMELL SEEMS TO DISSIPATE AT CRUISE FLIGHT. MOST NOTABLE WITH ENG
- [SDR ASAA2022082239599](https://openairdocs.org/sdr/ASAA2022082239599.md): Ground Wire · dirty · Aug 22, 2022 · N251AK · Boeing 737990ER · Emergency Lighting
  > R/H AFT OVERWING EMERGENCY EXIT DIM. GROUNDED - YES. REPLACED LIGHT ASSY AIW 737-900 AMM 33-21-00-960-805. NO HELP. CHECKED RESISTANCE OF CONNECTOR D14724 PIN B TO GROUND AND FOUND HIGH RESISTANCE. DEPINNED WIRE FROM GROUNDING BLOCK CLEANED AND REINSERTED IAW
- [SDR ASAA2022032137763](https://openairdocs.org/sdr/ASAA2022032137763.md): Power Supply · inoperative · Mar 21, 2022 · N251AK · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHTS AT R1 DOOR INOP GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M2816 AND INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-06-960-806
- [SDR ASAA2022030737775](https://openairdocs.org/sdr/ASAA2022030737775.md): Skin · none · Mar 7, 2022 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > FLOOR BOARD DELAME P/N 141A5810-729. GROUNDED - YES. REPAIRED FLOOR PANEL 141A5810-729 DAMAGES IAW B737 SRM 53-00-50-2RFLOORBOARD INSTALL ON ALASKA N/R G1653565 / 42565.
- [SDR ASAA2022030737774](https://openairdocs.org/sdr/ASAA2022030737774.md): Skin · none · Mar 7, 2022 · N251AK · Boeing 737990ER · Fuselage Miscellaneous Structure
  > FLOOR BOARD DELAM P/N 141A5810-181. GROUNDED - YES. REPAIRED FLOOR PANEL 141A5810-181 DAMAGED AREA IAW B737 SRM 53-00-50-2R FLOORBOARD INSTALL ON ALASKA N/R G1653565/ 42565.
- [SDR ASAA2022030637776](https://openairdocs.org/sdr/ASAA2022030637776.md): Skin · none · Mar 6, 2022 · N251AK · Boeing 737990ER · Fuselage Main, Plate/Skin
  > SAD DEFERRAL 12182341 REQUIRES RE-EVALUATION FOR PROER DEFERRAL CODE DUE ITS LOCATION IN THE RVSM EXTRA CRITICAL AREA. ( DEFECT LOCATED AT BS384, 4.5" ABOVE S17L) BEING REPORTED AS 1.5" LONG, 1.25W, AND.020" DEEP BS 384, STR16L- STR 17L. GROUNDED - YES. ON DE
- [SDR ASAA2020091933197](https://openairdocs.org/sdr/ASAA2020091933197.md): Bolt · loose · Sep 19, 2020 · N251AK · Boeing 737990ER · Flight Compartment Windows
  > THE COPILOT WINDOW IS VERY DIFFICULT TO OPEN AND CLOSE. FEELS LIKE SOMETHING IS BINDING IN THE TRACK. GROUNDED-YES. FOUND FWD LOWER SPECIAL BOLT BACKING OFF. RETIGHTENED LOWER SPECIAL BOLT, REF APPLICABLE STEPS OF B737-900 AMM TASK 56-12-11-820-80. NO ADJ
- [SDR ASAA2019061439692](https://openairdocs.org/sdr/ASAA2019061439692.md): Battery Pack · discharged · Jun 13, 2019 · N251AK · Boeing 737990ER · Emergency Lighting
  > AISLE EMERGENCY LIGHTS AT ROWS 25 AND 29 DEF AND 27 ABC FAIL T/C 78233001 EMERGENCY LIGHTS OPS CHK. GROUNDED - YES. REF B737-900 AMM 33-51-06, REMOVED/REPLACED EMERGENCY POWER SUPPLIES M2626 AND M2627. OPS NML.
- [SDR ASAA2017062521203](https://openairdocs.org/sdr/ASAA2017062521203.md): Lens · missing · Jun 25, 2017 · N251AK · Boeing 737990ER · Emergency Lighting
  > EXIT LIGHT COVER MISSING AT 16F. ACFT GROUNDED. INSTALLED THE LENS. OPS GOOD.

## 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 = 'N251AK' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N251AK/reports

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