Service difficulty report · Anti-Skid Valve · Boeing 757224

Difficulty date
January 6, 2024
Submitted
January 9, 2024
Operation
Air carrier
Aircraft
N34131
Make and model
Boeing 757224
Aircraft serial
28971
Aircraft time
94,532 hours, 20,128 cycles
Part
Anti-Skid Valve
Part number
V643602
Part serial
71222355
Condition
Faulty
Location
V35, Sta1040
Part time
94,518 hours, 20,123 cycles
Stage of operation
LD
How discovered
9
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NORMAL ANTISKID STATUS AND ANTISKID EICAS. *DM* ASSIST: SEE 32-FUP ON LP 6746804 BITE TEST SHOWS FAULT VALVE 7 , ACCOMPLISHED VISUAL INSPECTION OF ALL BRAKES NO FAULTS FOUND. REQUEST MEL ADD EMP:U102066 A/C DOWNGRADED TO AUTOLAND LIMIT LAND 2 C-B''S PULLED AND SAFETIED PER PROCEDURE B PLACARDS INSTALLED ADD EMP:U102066 DISPATCH DESK: 3308 NAME: KB DATE: 06-JAN-24- NOC DESK: 757 NAME: JONATHON DATE: 06-JAN-24- TOMC APPROVES ANTISKID SYSTEM INOPERATIVE PER MEL 3242AM PER PROCDURE B .. NOTE: "AUTOLAND LIMIT - LAND 2" PUSHED THE CB BACK IN AND REVERSED THE MEL REF LOG PAGE 6746804 FOR WORK PERFORMED. LP 6746804: LEVEL-1 CHRONIC -ANTISKID EICAS MSG DISPLAYED. DUE TO REPEAT ISS UES WITH AUTO BARKE CONTROL UNIT FAULTING VALVE (7). NOTE CONTRO L UNIT RECENTLY REPLACED AND VALVE 7 CONNECTOR CLEANED, ALL NO H ELP. PLEASE REPLACE VALVE 7 (V35) PER MM 32-42-03-401 AND VERIF Y (D1692) CONNECTOR CONDITION AND RELATED WIRE HARNESS FOR ANY D AMAGE PLEASE REF FIM 32-42-802 SSM 32-42-01 FOR ADDITIONAL INFO. NOTE ACTIVE MEL FOR CURRENT FAULT REF LP 6746303.PLEASE REPORT ALL FINDINGS AND ACTIONS TAKEN?.THANK YOU CARRIED BY ELB REPLACED VALVE 7 (V35) FUSE ANTI-SKID IN REF AMM 32-42-03-004-025/32-42-03-424-030 OPS CHECK GOOD PARTS USED: 1232139,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1232139 SN OFF 2355 IPC REFERENCE # 32-42-02-02 VALVE, HYD, FUS OFF 99-3242-9-9004 2355 ON 0000 VALVE, HYD, FUS OFF 99-3242-9-9004 2355 ON 99-3242-9-9004 8240.