Service difficulty report · Support · Boeing 75724APF

Difficulty date
July 25, 2026
Submitted
August 24, 2026
Operation
Air carrier
Aircraft
N455UP
Make and model
Boeing 75724APF
Aircraft serial
25476
Aircraft time
46,102 hours, 22,631 cycles
Part
Support
Part number
149N7550Y96
Condition
Cracked
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

AFTER CLEANING WW, FOUND RT WW CUTOUT CRACKED. REMOVED SEAL & RETAINER FROM SEAL RETAINER SUPPORT. IAW AMM 20-10-23-004-001, 32-12-51-004-001, REV 140, SRM 51-40-02-0G-0 REV 125. REMOVED 4 EA GUSSET SUPPORTS FROM SEAL RETAINER SUPPORT AT RBL 8.25 RBL 18.75 RBL 28 RBL 36.8. IAW SRM 51-40-02-0G-0, REV 125. INSTALLED (4 EA) GUSSET (BRACKETS) AT RT WW CUTOUT RBL 8.25, RBL 18.75, RBL 28, RBL 36.8, IAW SRM-51-40-02-0G-0. INSTALLED NEW CHANNEL SUPPORT AT RT WW CUTOUT IAW SRM 51-40-02-0G-0.

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