Service difficulty report · Tie Down · Boeing 7377H4

Difficulty date
July 6, 2022
Submitted
August 22, 2022
Operation
Air carrier
Aircraft
N202WN
Make and model
Boeing 7377H4
Aircraft serial
33999
Aircraft time
58,974 hours, 35,001 cycles
Part
Tie Down
Condition
Corroded
Location
Fuselage
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 ON TRACK TIEDOWNS AT FWD CARGO BAY LBL18 BS400; BS435; BS433; BS495; BS496. / [01] VERIDFIED APPLICABILITY IAW SRM 53-00-53-1A-2;[02] REMOVED CORROSION AT: BS 400 MAT. REMOVED 0.015; AREA FOUND WHIT IN LIMITS; BS 435 MAT. REMOVED 0.016; AREA FOUND WHIT IN LIMITS; BS 436 MAT. REMOVED 0.020; AREA FOUN WHIT IN LIMITS; BS 495 MAT. REMOVED 0.012 AREA FOUND WHIT IN LIMITS; BS 496 MAT. REMOVED 0.050 AREA FOUND OUT OF LIMITS IAW SRM 53-00-5301A-2;[03] USED TOOL DEPTH GAGE ID ATS1738 S/N UNKNOWN D.D. 09/2022;[04] MAT. REMOVED AT BS 496 0.029 AREA FOUND WHIT IN LIMITS IAW SRM 53-00-53-1A-2 USED DEPTH GAGE ID ATS1738 S/N UNKNOWN D.D. 09/2022;[05] UPDATED MEASUREMENTS;[06] REQ. OK TO TREAT AND PRIME REWORK AREAS;[07] VERIFIED CORRECTIVE ACTION ITEMS 1-4; AND THE CORRECTION TO BS 496 DEPTH IS 0.029; NOT OUT OF LIMITS. MEASUREMENT FIELDS HAS SEVERAL INCORRECT ITEMS; AND THIS NOT A LEVEL 3 TYPE CORROSION.;[08] UPDATED MEASUREMENTS;[09] REQ. OK TO APPLY TREAT AND PRIME;[10] VERIFIED CORRECTIVE ACTION #9<BR> OK TO APPLY TREAT AND PRIME GIVEN;[11] APPLIED CHEMICALL CONVERSION AND PRIME AT REWORK AREAS IAW SOPM 20--43-03 AND SRM 51-20-01-0G-0;[12] VERIFIED CORRECTIVE ACTION #11;[13] EDIT MEASUREMENTS;[14] VERIFIED MEASUREMENT TABLE<BR>TASK COMPLETE

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