Service difficulty report · Support · Boeing 7378H4

Difficulty date
December 8, 2021
Submitted
December 22, 2021
Operation
Air carrier
Aircraft
N8673F
Make and model
Boeing 7378H4
Aircraft serial
36937
Aircraft time
20,472 hours, 9,411 cycles
Part
Support
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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

AFT PIT CORROSION AT BS 947 ON AFT BULKHEAD FLOOR SUPPORT; RBL 17 WL179 DOT 45 ; / [01] BLENDED CORROSION BY HAND RUBBING IAW SRM 51-10-02; [02] VERIFIED STEP 1; [03] DUE TO NO TECH DATA FLOOR SUPPORT WAS FOUND TO BE OUT OF LIMITS; [04] VERIFIED STEP 3; [05] VERIFIED ITEMS 1 AND 3. VERIFIED CORROSION REMOVED WITH 10X MAGNIFICATION; [06] OK TO TREAT PRIME AND PAINT; [07] APPLIED CHEMICAL CONVERSION; PRIMER AND PAINT IAW AMM 51-21-41-370-803; AMM 51-21-72-370-804; AMM 51-21-99-300-801.; [08] VERIFIED STEP 7 C/W; [09] SUMMARY EA 21-153-03697 HAS BEEN APPROVED; ACTIVATED; AND ADDED AS A SUBTASK TO FAULT TTG8Q009PY7Y.; [10] REMOVED DAMAGE FROM AFT CARGO AFT BULKHEAD FLOOR SUPPORT AT BS 947 RBL 17 AND REPAIRED IAW EA 21-153-03697; [11] VERIFIED STEP 10 AND AUDITED

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