SDR 97ZZZX4258

Service difficulty report · Hose · Conaer LA4200

Difficulty date: September 18, 1997
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N9WA
Make and model: Conaer LA4200
Aircraft serial: 520
System (JASC): 2120 · Air Distribution System
Part: Hose
Condition: Omitted
Location: Alternator
Stage of operation: IN
Nature of condition: W
Precautionary procedure: K

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

What was found

THE 2-6050-27 HOSE CONNECTS THE ALTERNATOR COOLING PORT TO THE FLEXIBLE DUCT (SCAT HOSE) THAT BRINGS AIR FROM ABOVE ENGINE TO THE ALTERNATOR. THIS NON-CONDUCTIVE HOSE HAD BEEN OMITTED (AFTER ENGINE CHANGE) WHICH ALLOWED THE WIRE IN THE FLEX DUCT TO CHAFE ON AND MAKE CONTACT WITH THE ALTERNATOR FIELD TERMINAL CAUSING ALTERNATOR/REGULATOR FAILURE.