SDR UIEA2020040600693

Service difficulty report · Rotary Switch · Boeing 7673Y0

Difficulty date: April 4, 2020
Submitted: April 6, 2020
Operation: Air carrier
Aircraft: N1619A
Make and model: Boeing 7673Y0
Aircraft serial: 26208
Aircraft time: 74,080 hours, 13,263 cycles
System (JASC): 4940 · APU Start/Ignition System
Part: Rotary Switch
Part number: AC4500034
Part serial: 623
Condition: Defective
Location: Cockpit
Stage of operation: IN
How discovered: C
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

(THIRD GRIPE) APU SWITCH EXTENDS BEYOND START, THEN RETURNS TO START VICE ON POSITION. NEEDS ADJUSTMENT. APU OPERATES 4.0.(<P>TRANSFERRED TO MDDR 126667 IAW DDG 49-11-01A, CAT C, DUE DATE 14APR2020.</P><P>LOG PAGE 1150016 ITEM 2: REMOVED AND REPLACED APU ROTARY SWITCH PER SWPM 20-84-00. OPS CHECKED NORMAL. THIS CLEARS MDDR 126667. PLACARD REMOVED.</P>)

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