Service difficulty report · Skin · Boeing 74745E

Difficulty date
April 3, 2024
Submitted
April 8, 2024
Operation
Air carrier
Aircraft
N472MC
Make and model
Boeing 74745E
Aircraft serial
27062
Aircraft time
125,611 hours, 21,370 cycles
Part
Skin
Part number
UNKNOWN
Condition
Corroded
Location
Lt Wing
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

CORROSION - SKIN, LH WING INSPAR UPR SURFACE T/E AREA WS 469.82 ~ WS 478.80 REAR SPAR AREA(<P>1. REMOVED THE AFFECTED FASTENERS IAW SRM 51-40-02-0G-0 REV 120 2. BLENDED OUT THE DAMAGE AREA IAW SRM 57-20-01-1A-A REV 120 3. PFM NDT INSP REFER TO JOB CARD ATTACHING SHEET 0429729 & DATA SHEET 9184805-1 4. MEASURED REWORK AREA DEPTH = 0.018", LENGTH = 1.6", WIDTH 1.5" IT WAS ALLOWABLE IAW SRM 57-20-01-1A-1 DETAIL IX TABLE 1 REV 120 5. INSTALLED FASTENER IAW SRM 51-40-02-0G-0 REV 120 AND DWG 112U100 SH1 REV A 6. APPLIED PROTECTIVE COATING AT THE REWORK AREA IAW SRM 51-10-02-0G-0 REV 120.7. CONDITION CHECK NORMAL AND JOB COMPLETED</P> / <P> </P>)

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