What was found
BLEED VALVE WOULD NOT STAY CLOSED ON ENGINE. BLEED VALVE IS CONTROLLED BY AN ELECTRO-PNEUMATIC SIGNAL. TACHOMETER BOX CONTROLS THE ELECTRICAL SIGNAL AND, IN THIS CASE, TACHOMETER BOX FAILED INTERNALLY. ACFT TT, 7,372.2 HOURS.
- Difficulty date
- October 3, 1995
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N5771C
- Make and model
- Snias AS350B
- Aircraft serial
- 1369
- System (JASC)
- 7714 · Engine RPM Indicating System
- Part
- Tachometer Box
- Part number
- 017755517
- Condition
- Failed
- Location
- Aft Cargo
- 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.