Service difficulty report · Frame · Boeing 737724

Difficulty date
April 29, 2018
Submitted
April 30, 2018
Operation
Air carrier
Aircraft
N21723
Make and model
Boeing 737724
Aircraft serial
28790
Aircraft time
62,234 hours, 21,018 cycles
Part
Frame
Part number
144A2604
Condition
Cracked
Location
Bs 727
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 BS 727 LOWER FRAME WEB CRACKED AT FASTENER HOLE, 3 O'CLOCK AND 9 O'CLOCK POSITION. CRACK EXTENDS O/B 0.300" FROM FASTENER HOLE AND I/B FROM FASTENER HOLE THROUGH RADIUS AND INTO INBD FLANGE. CUT OUT THE CRACKS AND INSTALLED A REPAIR IAW EA 5310-08135, REV. B. REPAIRED IAW EA 5310-08135, REV B, OP 008.