Service difficulty report · Support · Boeing 7377H4

Difficulty date
November 15, 2021
Submitted
December 6, 2021
Operation
Air carrier
Aircraft
N914WN
Make and model
Boeing 7377H4
Aircraft serial
36622
Aircraft time
45,576 hours, 27,409 cycles
Part
Support
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 ACB RH FLOOR-TO-SIDEWALL SUPPORT; UNDER AFT FASTENER NUTPLATE; BS 947; RBL 21 (MARKED) ; / [01] REMOVED CORROSION ON FLOOR SIDEWALL SUPPORT ACB AT BS 947 RBL 21; REWORKED AREA; L= 1.5' W= 0.800' D= 0.008' ORIGINAL THICKNESS 0.040' REMAINING THICHNESS 0.032' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2; [02] VERIFIED CORROSION REMOVAL ON ACB RH FLOOR-TO-SIDEWALL SUPPORT AT BS 947 FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2; [03] LOCATED ;DRILLED AND APPLIED CHEMICAL CONVERSION COATING ON NEW FLOOR SIDEWALL SUPPORT ITEM BAC14496-377#70775 62 LOT 1459405-1 ON ACB AT BS 947 RBL 21 IAW SRM 51-20-01-0G-0 AND SRM 51-40-05-0G-0 AND OK TO PRIME.; [04] VERIFIED CORRECTIVE ACTION ITEM 3.

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