- Difficulty date
- July 7, 2020
- Submitted
- August 17, 2021
- Operation
- Air carrier
- Make and model
- Boeing 7377H4
- Aircraft serial
- 33853
- Aircraft time
- 54,363 hours, 32,167 cycles
- Part
- Bracket
- Condition
- Corroded
- Location
- Drain Mast
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** DRAIN MAST BRACKET; EVIDENCE OF CORROSION. BS993; LBL18; WL183 / REMOVED DAMAGED DRAIN MAST FITTING BS993 LBL18 W/L183. LOCATED; DRILLED; AND INSTALLED NEW DRAIN MAST FITTING IAW SRM 51-40-02-0G-0 AND DWG 147A7443. PERFORM A GOOD HEATER GROUND AND AIRMODE TEST IAW M/M 30-71-00-720-801