Service difficulty report · Pressure Blkhd · Boeing 7377H4

Difficulty date
January 22, 2026
Submitted
February 10, 2026
Operation
Air carrier
Aircraft
N435WN
Make and model
Boeing 7377H4
Aircraft serial
32455
Aircraft time
74,762 hours, 44,865 cycles
Part
Pressure Blkhd
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

DURING 5311-I-16524-NG (AD - INSP - FUSELAGE - INSPECTION OF BS 1016 AFT PRESSURE BULKHEAD CENTER DOME APEX - GROUP 2; INDICATION OF A CRACK (HFEC) AT BL0 RIGHT LOWER FASTENER. AFTER PAINT REMOVAL USING PART 6 51-00-00 PROCEDURE 23 INDICATION OF CRACK STILL PRESENT AND VISUALLY CRACK CAN BE SEEN RADIATING FROM ABOUT 1 O'CLOCK APPROXIMATELY 1/8 INCH. DAMAGE ON AFT PRESSURE BULKHEAD WAS REPAIRED IAW EA 26-153-00239-WIP1 THRU EA 26-153-00239-WIP4 AND FINAL EA 26-153-00239.

More about the Boeing 737-7H4