Service difficulty report · Drain Mast · Boeing 75724APF
FAA SDR system
- Difficulty date
- February 17, 2026
- Submitted
- March 9, 2026
- Operation
- Air carrier
- Make and model
- Boeing 75724APF
- Aircraft serial
- 25324
- Aircraft time
- 36,626 hours, 23,888 cycles
- Part
- Drain Mast
- Part number
- 346N20231
- Condition
- Corroded
- Location
- Zone 100
- Stage of operation
- IN
- How discovered
- V
- 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
RIGHT AFT FUSELAGE RT APU EXHAUST CONE DRAIN MAST BASE EXFOLIATED. REMOVED CORROSION AT RT AFT FUSELAGE AT APU EXHAUST DRAIN MAST BASE IAW SRM 51-10-02-0G-0. INSTALLED DRAIN MAST FROM RT AFT FUSELAGE RH APU EXHAUST CONE IAW IAW AMM 28-25-05-404-162.