Service difficulty report · Floor Support · Boeing 7378H4

Difficulty date
November 1, 2023
Submitted
December 7, 2023
Operation
Air carrier
Aircraft
N8556Z
Make and model
Boeing 7378H4
Aircraft serial
63583
Aircraft time
19,574 hours, 9,791 cycles
Part
Floor Support
Part number
UNKNOWN
Condition
Cracked
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

PASSENGER FLOOR SUPPORT ANGLE IS CRACKED; B.S.540 RBL 2<[01] REMOVED AND REPLACED FLOOR SUPPORT ANGLE PER SRM 51-40-02.;[02] REJECT: MEASUREMENT ITEM #10 SHOULD BE ANSWERED YES AS FAULT FAILURE TYPE IS LISTED AS 05 (DAMAGE). REFERENCE MPM 52.02.01.;[03] REJECT: PER MBF; INSTALLED PART NUMBER 143A5240-64 IS NOT SHOWING AS APPLICABLE TO THIS AIRCRAFT LINE NUMBER.;[04] UPDATED MEASUREMENT 10 TO 'YES' PER MPM 52.02.01;[05] INSPECTION CONFIRMS THAT REJECTION ON CORRECTIVE ACTION #2 HAS BEEN CORRECTED AS REQUIRED PER MPM 51.03.01 AND MPM 51.03.04.02. NO FURTHER ACTION REQUIRED.<BR>REJECT ON CORRECTIVE ACTION #3 REMAINS ACTIVE AT THIS TIME.;[06] NOTE: TSR 2023009101 HAD BEEN PREVIOUSLY SUBMITTED FOR REJECTION FOR ITEM #3. THERE HAS ALSO BEEN A DCR 62062 SUBMITTED FOR THIS ISSUE AS WELL.;[07] TSR 2023009101 ANSWERED BY ENGINEERING WITH CONCURRENCE THAT THIS PART (143A5240-64) IS ONE WAY FORWARD FOR THE -36;[08] C/W INSPECTION.

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