Service difficulty report · Bear Strap · Boeing 737924ER

Difficulty date
August 29, 2023
Submitted
October 6, 2023
Operation
Air carrier
Aircraft
N75425
Make and model
Boeing 737924ER
Aircraft serial
33460
Aircraft time
48,635 hours, 17,112 cycles
Part
Bear Strap
Part number
141A35225
Condition
Damaged
Location
Sta 224.8
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

BEAR STRAP AROUND NOSE GEAR DOORS AND FWD ACCESORY DOOR BENT AND DEORMED @ STA 224.8 AND BELOW S-24-R. C/W AVO11125 REV A. AVO 11152 STEP 4&5 ACCOMP RII HFEC SURFACE INSP OF EXPOSED BEAR STRAP PER NTM 6 51-00-00 PRO 23 NO CRACKS FOUND. STEP 5 ACCOMP RII HFEC HOLE INSP OF EXPOSED BEAR PER NTM PART 6 51-00-00 PR23. CRACK DETECTED SEE PIC ADD EMP:U236095 PER AVO 11152 ACCOMPLISHED STEPS A.1. THRU A.3. MAPPED OUT PER AVO 11152 NEED TO ACCOMPLISH HFEC INSP. PER STEP A.4. PER AVO11152 NEED TO ACCOMPLISH HFEC HOLE PROBE INSP. PER STEP PIC OF BEAR STRAP WITH INDICATION OF CRACK DAMAGE, STRIPPED AND CLEANED BEAR STRAP. A.5. ACP. RII INSPECTION IAW GMM 09-25-05, & AVO11152 ORIG. STEP 7 PER 737 NTM PART 6 51-00-00 PROC. 23 OF EXPOSED BEAR STRAP AREA. AND STEP 8 PER 737 NTM PART 6 51-00-00 PROC. 16 OF OPEN HOLES. NO DEFECTS NOTED AFTER REWORK. ACCOMPLISHED STEP 6 OF AVO COLD WORKED BEAR STRAP. REQUIRE INSPECTION TO ACCOMPLISH STEPS 7-8 OF SAME AVO 11152. ACCOMPLISHED HFEC OF L/H & R/H BEAR STRAP TRIM LINE IAW AVO 11139 AND NTM 6 51-00-00 PRO 23 NO CRACKS NOTED AT THIS TIME. PER AVO11139 STEP 1. CUT BEAR STRAP AT LEFT AND RIGHT LOCATIONS PER AVO11139 NEED TO COMPLY WITH STEPS A.1.A,HFEC OF THE TRIM COMPLIED WITH AVO11139 STEP A.2. DETAILED VISUAL INSP. AVO 11139 ACCOMPLISHED STEP A.4 HFEC HOLE PROBE INSP PART 6 PER AVO11139NEED TO COMPLY WITH STEPS A.1.A HFEC OF THE BEAR PER FIG. 1 LINE AND STEPS A.3 AND A.4. HFEC COUNTERSINK AND HOLE PROBE 51-00-00 PROCEDURE 16 OF (LEFT AND