SDR 20010209CW005

Service difficulty report · Downlock Switch · Beech 76

Difficulty date: November 30, 2000
Submitted: February 9, 2001
Operation: General aviation
Aircraft: N6011U
Make and model: Beech 76
Aircraft serial: ME101
Engine: Lyc O360*
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Downlock Switch
Part number: 1003810061
Condition: Failed
Location: Lt Mlg
Component: Main Landing Gr · Beech · BE76
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

THIS IS A TWO WAY SWITCH, ONE HALF IS FOR THE INDICATOR LIGHT WHICH WORKS, THE OTHER HALF IS FOR THE DOWN & LOCK SYSTEM. WHICH SHUTS OFF THE MOTOR WHEN THE GEAR IS DOWN. THE MAINTENANCE MANUAL TROUBLESHOOTING SECTION IS INCORRECT, IT SAYS IF THE MOTOR KEEPS RUNNING, ONE OR MORE SWITCHES ARE OPEN. IN REALITY ONE OR MORE SWITCHES ARE CLOSED.

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