Service difficulty report · Angle · Boeing 7378H4

Difficulty date
May 4, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N8670A
Make and model
Boeing 7378H4
Aircraft serial
36656
Aircraft time
27,016 hours, 12,741 cycles
Part
Angle
Condition
Corroded
Location
Zn 100 Fus Lower
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

AFT CARGO RH FLOOR TRANSITION ANGLE (SIDEPLATE CHANNEL) CORROSION OUT OF LIMITS BS727I TO 727J.<[01] COMPLIED WITH MEASUREMENTS.;[02] COMPLIED WITH TOOL REQUIREMENT.;[03] REMOVED CORROSION FROM AREA PER SRM 53-00-53-1A-2 (REMAINING THICKNESS 0.036'). TRANSITION ANGLE IS OUT OF LIMITS PER SRM 53-00-53-1A-2.;[04] VERIFIED REMOVED CORROSION FROM AREA PER SRM 53-00-53-1A-2 (REMAINING THICKNESS 0.036'). TRANSITION ANGLE IS OUT OF LIMITS PER SRM 53-00-53-1A-2.;[05] REMOVED FASTENERS FROM RH TRANSITION ANGLE FROM STA 727H TO 767 PER SRM 51-40-02.;[06] CUT AND REMOVED RH TRANSITION ANGLE STA 727H+9' TO STA 767 PER <BR>SRM 53-00-53-2R-5.;[07] FABRICATED REPAIR PARTS OUT OF FORM CHANNEL BAC1496-377 7075 T62 PER <BR>SRM 53-00-53-2R-5.;[08] INSPECTED WORK PERFORMED ON C/A #7;[09] TREATED FABRICATED REPAIR PARTS PER SRM 51-20-01 AND PRIMED PER SOPM 20-41-02.;[10] INSTALLED BONDED NUTPLATES ON REPAIR PARTS PER SRM 51-40-10 AND SOPM 20-50-12.<BR>NUTPLATES INSTALLED AT 0400 CT 12-MAY-2023;[11] STEP 9 INSPECTED WORK ABOVE;[12] STEP 10 NEEDS PUSH TEST AFTER NUTPLATES CURE;[13] OK TO INSTALL REPAIR PARTS.;[14] INSTALLED REPAIR PART PER SRM 53-00-53-2R-5.;[15] CW INSP. RII;[16] ACCOMPLISHED PUSH TEST FOR BONDED NUTPLATE INSTALLATION I.A.W SRM 51-40-10-2R-0. SEE WORK STEPS FOR WORK ACCOMPLISHED.

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