Service difficulty report · Angle · Boeing 7377H4

Difficulty date
May 2, 2022
Submitted
May 31, 2022
Operation
Air carrier
Aircraft
N244WN
Make and model
Boeing 7377H4
Aircraft serial
34864
Aircraft time
53,556 hours, 31,861 cycles
Part
Angle
Condition
Cracked
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

ATTACH ANGLE CRACKED AT CENTER TANK LOWER SKIN EXTERIOR STA. 663 LBL 5-21 / [01] FORMED REPLACEMENT ANGLE MAT. USED 2024T3 CLAD.063 &REPAIR ANGLE;MATERIAL USED 2024T3 .071 AS PER SRM. B737-7 51-30-01-0G-0 &SRM 57-10-10-2R -5 REPAIR 5;[02] VERIFIED STEP 1;[03] PERFORMED HFEC INSP. ON REFORMED FABRICATE ANGLE IAW B737 NDT PART 6; 51-00-00; PROCEDURE 23. NO CRACKS NOTED<BR>TOOL: NORTEC 600 B/C: 166317 DUE: 10/20/22;[04] REMOVED SEVERAL FASTENERS AT ATTACH ANGLE HORIZONTAL FLANGE AT L/H CENTER TANK LOWER SKIN EXTERIOR STA 663 LBL 5-21 REF. B737-700 SRM 51-40-02-0G-0.;[05] VERIFIED STEP #4. REMOVED SEVERAL FASTENERS AT ATTACH ANGLE HORIZONTAL FLANGE AT L/H CENTER TANK LOWER SKIN EXTERIOR STA 663 LBL 5-21 REF. B737-700 SRM 51-40-02-0G-0.;[06] PERFORMED ROTO INSP. ON EXISTING HOLES IN REPAIR AREA @ L/S THE CENTER TANK LWR SKIN EXTERIOR STA 663 LBL 5-21 IAW B737 NDT PART 6 51-00-00 PROC. 16. NO CRACKS; EQUIP: NORTEC 600 B/C 166316 CAL DUE: 10/22>CUT OUT DAMAGED SECTION OF ATTACH ANGLE AT L/H CENTER TANK LOWER SKIN STA 663.;[29] FROM STEP#10. (RII)<BR>TRIMMED; LOCATED & DRILLED 2 EACH ANGLES;[30] FROM STEP #12. (RII)<BR>OK TO TREAT AND PRIME DRILLED ANGLE REPAIR PARTS.

More about the Boeing 737-7H4