What was found
LOUD HUMMING NOISE IN ENGINE COMPARTMENT WITH BOOST PUMPS ON. REPLACED WITH SERVICEABLE PART.
- Difficulty date
- June 20, 2001
- Submitted
- June 26, 2001
- Operation
- General aviation
- Aircraft
- N723PH
- Make and model
- Bell 407
- Aircraft serial
- 53283
- Aircraft time
- 2,319 hours
- Engine
- Allsn 250C47B
- System (JASC)
- 7320 · Fuel Controlling System
- Part
- Hmu
- Part number
- 23072725
- Part serial
- JGALM0089
- Condition
- Noisy
- Location
- Engine
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.