Service difficulty report · Frame · Boeing 737724

Difficulty date
October 21, 2025
Submitted
November 4, 2025
Operation
Air carrier
Aircraft
N13720
Make and model
Boeing 737724
Aircraft serial
28939
Aircraft time
81,351 hours, 28,707 cycles
Part
Frame
Part number
143A122113
Condition
Damaged
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

WHILE PREPARING FWD CARGO DOOR STRAP FOR FABRICATION FOUND AN ELONGATED HOLE LOCATED AT RBL21, STA 500, AND S-26R. REPAIRED PER ECRA 5311-03406 PART 1 INTERIM REPAIR, ON THE BS500 FRAME INNER CHORD REPAIR BETWEEN S-24R AND 26R, ACCOMPLISH INSPECTION REQUIREMENTS PER PART 2 OF LATEST REV OF ECRA5311-03406 ON OR BEFORE 75,000 TOTAL FLIGHT CYCLES