Service difficulty report · None · Boeing 737

Difficulty date
September 7, 2022
Submitted
September 7, 2022
Operation
Air carrier
Aircraft
N71411
Make and model
Boeing 737
Aircraft serial
30128
Aircraft time
56,444 hours, 22,968 cycles
Part
None
Part number
NA
Condition
None
Location
Sta. 92.70
Stage of operation
IN
How discovered
O
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

L/H HORIZONTAL STAB LOWER SKIN REQUIRES CUTOUT AT STA. 92.70 #1 VERTICAL RIB STIFFENER REPAIR. 41437 ACCOMPLISHED TASKS AND PARTIAL WORK ACCOMPLISHED (HFEC INS TE JULY 6 2022 06:54. HFEC COMPLETED ON UPDATED ENTRY SUB TASK 0 T-76511 PO: 123199. 2.) 7075 T-62 PO:007779 3.) 7075 T-6 .20 PO NSPECTION BUYBACK IN ERROR. ENTRY WAS MADE BY AN INSPECTOR FOR I NCE SUB TASK ST-002: PERFORMED HFEC AROUND STIFNER AND WEB CUT O RE CLEAN FOR ANY FOD. INSTALLED DOUBLER, EDGE SEALED AND APPLIED TO READ "INSPECTION THRESHOLD 56,000 FLIGHT CYCLES FOR A DETAIL ER. REPEATINSPECTIONS EVERY 9,000 FLIGHT CYCLES THERE AFTER SEE REF SRM 55-10-01-2R-11. REF BAM N/R 841437 FOR ALL WORK ACCOMPL PECTION REQUIRED OF SKIN CUTOUT IAW B737-900 SRM 55-10-01-2R-11 01 DIP REQUIRED FOR REPAIR IAW B737-900 SRM 55-10-01-2R-11 REPAI : 073267. VERIFIED MATERIAL ID IN PARTS CALLED OUT IN 737 SRM 55 NFORMATION ONLY ON REPAIR DOUBLER MATERIAL ID ENTRY IN PREVIOUS UT .NO DEFECTS NOTED . OK TO CONTINUE REPAIR. CORBAN IAW B737-900 SRM 55-10-01-2R-11 REPAIR 11 OK TO TOP COAT VISUAL INSPECTION AND EXTERNAL (LFEC) INSPECTION OF REPAIR DOUBL SRM 55-10-01-2R-11 REPAIR 11 PAGE 7 TABLE 204 FOR INSP METHODS." ISHED REPAIR 11 STEP 4.D.(1)(A). R 11.. -10-09 TABLE 201. OK TO CONTINUE REPAIR. UPDATE MADE BY MAINTENANCE. . VERIFIED INSTALLATION OF DOUBLER REF. B737-900 SRM 55-10-01-2R -11 CHECK OK CUT OUT SKIN ACCESS HOLES ONE ON EACH SIDE OF THE #1 RIB STIFFEN NER AT L/H STAB STA. 92.70. INSTALLED REPAIR DOUBLER ISSUED DIP ALL WORK I