What was found
WHEN UNIT WAS FIRST CHECKED #1 NEEDLE AND #2 NEEDLE HAD 10% SPLIT THROUGHOUT SCALE. AFTER SEVERAL MINUTES OF OPERATION, THE SPLIT BETWEEN #1 AND #2 NEEDLE LESSENED TO 4% AND ONLY ABOVE 70% RPM. TIME SINCE REPAIR 100:10.
- Difficulty date
- April 23, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N3893P
- Make and model
- Bell 412
- Aircraft serial
- 33012
- System (JASC)
- 7714 · Engine RPM Indicating System
- Part
- Indicator
- Part number
- 412075010109
- Condition
- Defective
- Location
- Triple Tach
- 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.