# SDR ASAA2026022763630

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2026
- Submitted: March 2, 2026
- Operation: Air carrier
- Aircraft: [N782HA](https://openairdocs.org/aircraft/N782HA), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 66430
- Aircraft time: 3,515 hours, 563 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 100260201
- Part serial: ST23051400
- Condition: Faulted
- Location: Zone 200
- Part time: 3,515 hours, 563 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2026022763630

## Discrepancy

2R PASSENGER DOOR OVERHEAD EMERGENCY LIGHTS WILL NOT TURN ON. MAITENANCE MESSAGE 33-11404. GROUNDED - YES. REMOVED AND REPLACED 2R WELS BATTERY PER B787 AMM 33-51-07. OPS CHECK FAILED (26771). REMOVED AND REPLACED FWD PRIME WELS CONTROL UNIT BATTERY. CHECKS GOOD IAW AMM 33-51-07-02B-720AA. OK FOR SERVICE.

---
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.