# SDR SWAA2021062872100

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2021
- Submitted: June 28, 2021
- Operation: Air carrier
- Aircraft: [N207WN](https://openairdocs.org/aircraft/N207WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34012
- Aircraft time: 52,378 hours, 31,227 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Charger
- Condition: No Test
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021062872100

## Discrepancy

M1670 FAILS CAPACITY CHECK. ; EMERGENCY LIGHT BATTERY PACK M1670 FAILS CAPACITY CHECK. / [01] REMOVED AND REPLACE BATTERY CHARGER ASSY AT M1670 PER AMM 33-51-06-960-806 STEPS 5.A - 5.E(3)(F).; [02] VERIFIED REPLACEMENT OF BATTERY CHARGER ASSY PER AMM 33-51-06-960-806; [03] REMOVED AIR GRILLE AT STA 727C TO ACCESS M1670 BATTERY PACK PER AMM 33-51-06-960-805 STEP 4.D.(2); [04] VERIFIED; [05] OK TO INSTALL AIR GRILLE AT STA 727C GIVEN; [06] REMOVED AND REPLACED M1670 BATTER PACK AND PERFORMED A GOOD OPS TEST PER AMM 33-51-06-960-805; [07] PERFORMED A GOOD OPS TEST OF THE NEW M1670 POWER SUPPLY PER AMM 33-51-06-960-806 STEP 5.E.4; [08] INSTALLED AIR GRILLE AT STA 727C PER AMM 33-51-06-960-806 4.D.(6)(C); [09] VERIFIED PERFORMED A GOOD OPS TEST OF THE NEW M1670 POWER SUPPLY PER AMM 33-51-06-960-806 STEP 5.E.4 AND INSTALLATION OF AIR GRILLE AT STA 727C PER AMM 33-51-06-960-806 4.D.(6)(C)

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