Service difficulty report · Exciter · Boeing 76733A

Difficulty date
June 24, 2019
Submitted
July 1, 2019
Operation
Air carrier
Aircraft
N1439A
Make and model
Boeing 76733A
Aircraft serial
28495
Aircraft time
69,733 hours, 16,273 cycles
System (JASC)
7412 · Exciter
Part
Exciter
Part number
106310452B
Part serial
UNNEJ790
Condition
Malfunctioned
Location
Rt Engine
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

ITEM 1 - INFO, FIRST START ATTEMPT ON RIGHT ENGINE NO LIGHT OFF. ITEM 2 - STATUS MESSAGE: R ENG IGNITER 1(<P>RT ENG #1 IGNITION INOP. PLACED ON MEL 74-00-01B DMI #113663, SELECT BOTH TO START ENGINE. </P><P>LP 1080536 - M2: REMOVED AND REPLACED RT ENG #1 IGNITER PLUG IAW AMM 74-21-02. NO FIX. DMI # 113663 REMAINS OPEN.</P><P>LP 1080539 - M4: INITIALLY, RT ENG #1 IGN FAILED AUDIBLE TEST PER AMM 74-00-00, CLEANED AND RE-SEATED IGN EXCITER #1 CONNECTOR (M7196). AUDIBLE TEST PASSED, CHECKED WIRES FROM EEC TO IGN #1 EXCITER PER SWPM 20-10-06, NO DEFECTS NOTED. R/R RELAY K1231 PER SWPM 20-81-22. RAN RT ENGINE ISOLATING L ENG, OPS CHECKED GOOD PER AMM 71-00-00 DMI REMAINS OPEN.</P><P>LP 1054203 - M5: PERF. ENGINE #2 IDLE RUN IN SINGLE IGNITION POSITION IAW AMM 71-00-00-712-168-H03. OPERATION NORMAL. DMI REMAINS. MCC ADVISED.</P><P>LP 1054211 - M6: REMOVED AND REPLACED RT ENGINE #1 LEAD IAW AMM 74-21-01. OPS CHECK, NOT GOOD. DMI 113663 REMAINS OPEN, NEED FURTHER T/S. </P><P>LP 1054220 - M6: REMOVED AND REPLACED #1 AND #2 EXCITER BOXES ON RIGHT ENGINE IAW AMM 74-11-01. OPS CHECK NORMAL. ENGINE START NORMAL (#1 AND #2) SYSTEM EMS. NOT EICAS MESSAGE. THIS CLEARS MDDR 113663. </P><P>2ND OFF PART (P/N 10-631045-3B, S/N: LFW354)</P>)

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