Service difficulty report · Shield · Boeing 73773V

Difficulty date
July 20, 2023
Submitted
August 15, 2023
Operation
Air carrier
Aircraft
N7839A
Make and model
Boeing 73773V
Aircraft serial
30243
Aircraft time
63,332 hours, 39,016 cycles
Part
Shield
Part number
UNKNOWN
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

CORROSION ON FWD SHIELD AT ACB BS767 - BS787 RBL22 WL157.<[01] THIS PART DOES NOT HAVE ALLOWABLE DAMAGE LIMITS.IT HAS TO BE REPAIRED BY REPLACEMENT PER SRM 51-10-02-0G. STEP 9.;[02] VERIFIED CORRECTION ACTION ITEM 1AND MEASUREMENT TABLE.;[03] REMOVED FWD SHIELD AT ACB BS767 - BS787 PER SRM 51-40-02-0G.;[04] RECEIVED NEW SHIELD P/N 146A8127-1 LOT # 1482004 <BR>LOCATED AND DRILLED IAW DWG 146A8123 AND SRM 51-40-05.;[05] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 4.;[06] OK TO APPLIED COAT OF BMS10-11 TYPE II ENAMEL ON FWD SHIELD.;[07] OK TO APPLICATION COAT OF BMS10-11 TYPE II ENAMEL ON FWD SHIELD GIVEN;[08] APPLIED COAT OF BMS10-11 TYPE II ENAMEL ON FWD SHIELD PER AMM 51-21-73-370-804 <BR>TIME OF APPLICATION: AT 26-JUL-2023 21:52 UTC;[09] OK TO APPLY CORROSION INHIBITING COMPOUND ON FWD SHIELD PER SRM 51-20-01.;[10] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 8.<BR>OK TO APPLY CORROSION INHIBITING COMPOUND ON FWD SHIELD GIVEN;[11] APPLIED CORROSION INHIBITING COMPOUND ON FWD SHIELD PER SRM 51-20-01.<BR>TIME OF APPLICATION: AT 27-JUL-2023 19:04 UTC<BR><BR>OK TO INSTALL FWD SHIELD AT ACB;[12] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 11.<BR>OK O INSTALL FWD SHIELD AT ACB GIVEN;[13] PARTIALLY INSTALLED FWD SHIELD PER SRM SRM 51-40-02-0G.;[14] INSTALLED FWD SHIELD PER SRM SRM 51-40-02-0G AND DWG 146A8127.;[15] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 14.;[16] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 14 AND MEASUREMENT TABLE.

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