EFTA00629960Set 9
2016-04-082p713w
comes From inside engine cowling from FAN duct
Bleed air, it's regulated by LP "Fan Air" valve,. See Petes description for system operation below, he
recommends swapping duct temperature ... valve, allowing the pressure to bleed off and not closing the valve.
The right LP- "Fan air" valve my be at fault-
There is pressure applied from the duct
https://www.justice.gov/epstein/files/DataSet%209/EFTA00629960.pdf
EFTA01203361Set 9
2014-03-1133p8,194w
Invoke Number: INV14-00077
Discrepancy: 4.19. Assist Dallas Ainnotive with right engine LP fan balance.
Resolution: Taxi aircraft to run up area and run right engine as required to balance ... LP fan. 02/19/2014
Time & Materials Flat Rate Total
Labor: 1.232.50 USD 1,232.50 USD
Services: 3,222.16 l3D 3,222.16 USD
Total: 4.454.66 USD 0.00 USD 4,454.66 USD
Labor
https://www.justice.gov/epstein/files/DataSet%209/EFTA01203361.pdf
EFTA01940915Set 10
2014-01-281p334w
isolation mounts failing, I
informed him, we are changing the mounts during this visit,
-LP Fan balance or N1 fan chaffing could cause airframe Vibration also, which we need
https://www.justice.gov/epstein/files/DataSet%2010/EFTA01940915.pdf