Service difficulty report · Skin · Boeing 75733N

Difficulty date
July 17, 2025
Submitted
July 21, 2025
Operation
Air carrier
Aircraft
N78866
Make and model
Boeing 75733N
Aircraft serial
32591
Aircraft time
71,016 hours, 21,372 cycles
Part
Skin
Part number
143N3320
Condition
Scratched
Location
Zone 100
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

LEFT FUSELAGE SKIN APPOX. STA 418 TO STA. 428. HAS SCRATCH IN SKIN BETWEEN STR.17L AND 18L. FWD OF TAT SENSOR. REF LOG PAGE 5581101 BLENDED, REMOVED DAMAGE REF SRM 51-10-02. NEEDS HFEC INSP FOR CRACKS AND ULTRA SOUND INSP. FOR MATERIAL LOSS. REF SRM 53-00-01-1A-1 ACP'D HFEC PER NDT PT6, 51-00-19 ON BLENDED AREA, NO CRACKS NOTED. ALSO MEASURED AREA PER PT4, 51-00-10 AND RECORDED REMAINING THICKNESS. ULTRASOUND INSPECTION DAMAGE AREA IS WITHIN THE LIMIT REF. SRM 51-00-01-1A-1. APPLIED A LAYER OF CORROSION INHIBITING COMPOUND & APPLIED THE DECORATIVE FINISH REF. SRM 51-20-01 & AMM 51-21-10/701.

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