- Difficulty date
- November 15, 2023
- Submitted
- December 14, 2023
- Operation
- Air carrier
- Aircraft
- N7722B
- Make and model
- Boeing 73776N
- Aircraft serial
- 32668
- Aircraft time
- 55,418 hours, 28,473 cycles
- Part
- Channel
- Part number
- UNKNOWN
- Condition
- Corroded
- Location
- Zn 100 Fus Lower
- 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 FOUND AFT CARGO LH 'Z' CHANNEL FROM STA 727E TO STA 747 LBL 21 WL 155.5 HAS SPOT OF CORROSION.<[01] REMOVED AND REPLACED AFT CARGO L/H 'Z' CHANNEL FWD SECTION; REF SRM 51-40-02-0G-0;[02] VOID STEP 1 ENTERED IN ERROR;[03] REMOVED AND REPLACED AFT CARGO L/H 'Z' CHANNEL FWD SECTION; REF SRM 53-00-53-2R-6; SRM 51-40-02-0G-0; DWG#146A7502;[04] RII -- VERIFIED STEP 3.