Service difficulty report · Stiffener · Boeing 7377BD

Difficulty date
July 15, 2022
Submitted
July 27, 2022
Operation
Air carrier
Aircraft
N7732A
Make and model
Boeing 7377BD
Aircraft serial
34861
Aircraft time
52,541 hours, 28,248 cycles
Part
Stiffener
Condition
Cracked
Location
R/H Horiz. Stab.
Stage of operation
IN
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

R/H HORIZONTAL STABILIZER RIB #4 STIFFENER #2; LOWER FLANGE WITH A CRACK. / [01] CRACK CONFIRMED IAW NDTM PART 6; 51-00-00 PROCEDURE 23. CRACK LENGTH : 0.945'<BR>[NORTEC 600 ; B/C 166317 ; CALIB.DUE- 10/22];[02] CUTOUT THE DAMAGE AREA AT RH HORIZONTAL STAB RIB #4 STIFFENER #2 SRM 55-10-09-2R-4;[03] VERIFIED STEP1 AND 2;[04] PERFORMED HFEC AT CUT OUT AS PER NDTM PART 6; 51-00-00 PROCEDURE 23. NO CRACKS<BR>[NORTEC 600 ; B/C 166316 ; CALIB.DUE- 10/22];[05] LOCATED NEW REPAIR PARTS AND DRILLED NEW HOLES SRM 51-40-05-0G-0;[06] VERIFIED STEP 5.<BR>VERIFIED NICKS; SCRATCHES; GOUGES; BURRS AND SHARP EDGES REMOVED.<BR>OK TO TREAT AND PRIME.;[07] TREATED AND PRIME AREA REPAIRS AND NEW HOLES AMM 51-21-72-370-804 AND 51-21-41-370-802;[08] VERIFIED STEP 7.<BR>OK TO INSTALL REPAIR.;[09] INSTALLED REPAIRS AT RH HORIZONTAL STAB RIB #4 SRM 55-10-09-2R-4;[10] VERIFIED STEP 9.;[11] APPLIED FILLET SEAL AT RH HORIZONTAL STAB RIB #4 TO REPAIR PARTS.<BR>REF. B737-700. SRM-55-10-09-2R-4. STEP 4/Q.;[12] VERIFIED STEP # 11;[13] JOB IS COMPLETE;[14] JOB IS COMPLETE

More about the Boeing 737-7BD