- Difficulty date
- March 16, 2021
- Submitted
- March 19, 2021
- Operation
- Air carrier
- Aircraft
- N271UP
- Make and model
- Doug MD11F
- Aircraft serial
- 48572
- Aircraft time
- 66,331 hours, 18,708 cycles
- Part
- Battery Pack
- Condition
- No Test
- Location
- Emergncy Lights
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN PREFLIGHT TESTING THE EMERGENCY LIGHTS EMERG LT BAT 1 LO ILLUMINATED. DEFERRED PER MEL 33 50 4 EMERGENCY LT BAT 1 LO DMP C/W M738710R/R'D EMERGENCY LIGHT BATTERY & OPS CK REF MM 33-50-00. OPS CHK GOOD. DMP REVERSED 33-50-1. M738710 CLEARED. EFF SOURCE 33-51-01-05-015.