SDR 97ZZZX4426

Service difficulty report · Scavenge Tube · Bell 206L4

Difficulty date
August 13, 1997
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N177AL
Make and model
Bell 206L4
Aircraft serial
52157
Engine
Allsn 250C30P
Part
Scavenge Tube
Part number
23058110
Condition
Chafed
Location
Nr 1 Bearing
Component
23004545
Stage of operation
IN
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

UPON DISASSEMBLY OF ENGINE FOR T/C, FOUND SCAVENGE TUBE HAD EXCESSIVE CHAFING FROM CONTACT WITH COMPRESSOR SCROLL. EXCESSIVE CHAFING ON TUBE DUE TO MISALIGNMENT CAUSING CONTACT WITH SCROLL. SUBMITTER STATED ENSURE PROPER CLEARANCE BETWEEN NR 1 SCAVENGE TUBE AND SCROLL AFTER INSTALLATION.

More about the Bell 206L-4