Service difficulty report · Spar · Boeing 737724

Difficulty date
July 22, 2014
Submitted
July 23, 2014
Operation
Air carrier
Aircraft
N39728
Make and model
Boeing 737724
Aircraft serial
28944
Aircraft time
49,234 hours, 16,565 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Cracked
Location
Wing
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 HFEC INSPECTION OF WING REAR SPAR WEB AT STATION RBL 24.92 - 31.93 RT WW A CRACK WAS INDICATED. AREA OF CRACK INDICATION MARKED IN RED. REPAIRED IAW SRM 57-10-10. REPAIR 3 ALT 1 REQUIRES INITIAL INSP AT 56000 FLIGHT CYCLES & RECURRING INSP AT 36000 FLIGHT CYCLES IAW TABLE 203 & FIGURE 205. DIP CONTROL 25628. ACCOMPLISH INSP AT THRESHOLD OF 56,000 FLIGHT CYCLES AFTER REPAIR INSTALLED & REPEAT EVERY 36,000 FLIGHT CYCLES THEREAFTER IAW SRM 57-10-10 REPAIR 3 TABLE 203. INITIAL 56K FC AUTO ITO RIR 36K FC -0644.