Service difficulty report · Flange · Boeing 7377H4

Difficulty date
December 27, 2021
Submitted
January 5, 2022
Operation
Air carrier
Aircraft
N474WN
Make and model
Boeing 7377H4
Aircraft serial
33861
Aircraft time
58,782 hours, 34,911 cycles
Part
Flange
Condition
Cracked
Location
Center Tank
Stage of operation
UK
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

CRACK NOTED AT UPPER CENTER TANK; UPPER SURFACE; HORIZONTAL FLANGE IN CABIN - JUST FWD OF BS 663; O/B OF RBL 45 FLOOR BEAM; SPANNING 3-4'. SUMMARY EA 21-157-03856 HAS BEEN APPROVED; ACTIVATED; AND ADDED AS A SUBTASK TO FAULT TTG8Q00A0MLR.

More about the Boeing 737-7H4