Service difficulty report · Angle · Boeing 7378H4

Difficulty date
December 18, 2022
Submitted
January 25, 2023
Operation
Air carrier
Aircraft
N8522P
Make and model
Boeing 7378H4
Aircraft serial
36922
Aircraft time
20,005 hours, 9,591 cycles
Part
Angle
Condition
Corroded
Location
Zn 100 Fus Lower
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

L/H TRANSITION ANGLE HAS MULTIPLE AREAS OR CORROSION BETWEEN BS 767 - 827<[01] REMOVED CORROSION ON L/H TRANSITION ANGLE AT LBL787+15; ORIGINAL THICKNESS .045IN; REMOVED .009?; REMAINING THICKNESS .036?. FOUND TO BE OUT OF LIMITS AS PER SRM 53-00-53-1A-2.;[02] REMOVED L/H TRANSITION ANGLE FROM; STA. 272+5 TO STA. 847 PER SRM 51-40-02 LOCATED AND DRILLED NEW BAC1496-377 (CHANNEL; FORMED 7075T62-CLAD) PER SRM.53-00-53-2R-5 TREATED AND PRIME CHANNEL PER SRM. 51-20-02;[03] INSTALLED NEW SECTION OF TRANSITION ANGLE PER SRM SRM 53-00-53-2R-5. PUSH TESTED NUT PLATES GOOD PER SRM 51-40-10.;[05] CORRECTIVE ACTION #2 WAS WRITTEN IN ERROR. INCORRECT STATION #.;[06] REMOVED L/H TRANSITION ANGLE FROM; STA. 727+5 TO STA. 847 PER SRM 51-40-02 LOCATED AND DRILLED NEW BAC1496-377 PER SRM.53-00-53-2R-5 TREATED AND PRIME CHANNEL PER SRM. 51-20-02. LOCATION OF THE TWO SPLICES PER SRM 53-00-53-2R-5 ARE AT STA 727C+10 AND STA 727I+10.;[07] REJECT: L/H TRANSITION ANGLE INSTALLED AT STA. 727+5- STA. 847; LBL 25 (REF. TTG8Q00GQWL5) IS NOT AN APPROVED FABRICATED PART.;[08] INSTALLED NEW SECTION OF TRANSITION ANGLE FROM STA. 727+5 TO STA. 847 PER SRM SRM 53-00-53-2R-5.;[09] C/W INSPECTION. SEE TSR 202300134 FOR AUTHORIZATION.

More about the Boeing 737-8H4