Supplement Airplane Maintenance Manual
Cessna 172 with TAE 125-02-99 / -114
AMM-20-02
Chapter:
Issue:
Issue Date:
Page:
Content:
20-AMM-71-02
3
06.11.2013
12
46
Rev. No:
Rev. Date:
1
25.08.2014
Table 71-4a Troubleshooting / Engine runs roughly
Code
Indication
Code
Task/Check
Check by
Corrective Action
Engine runs roughly
8
RPM surging
(accompanied
by rough
running
engine)
8.1
Check fuel quality / type
Ensure fuel type conforms to
specification in current Operating
Manual
Contact TAE
8.2
Check crank signal
Connect FADEC Service Tool
using CAN interface kit. Both
FADEC-halfs should deliver
identical, stable RPM display.
Proceed to Code 45, " Faulty
Cran/Cam signal"
8.3
Check P-Rail sensor
signal
Connect FADEC Service Tool
while performing ground run and
reproducing the problem.
Compare "P-Rail" to "P-Rail Tar".
If capable, do so by generating
graph. Intermitting P-Rail sensor
fault will result in erratic pressure
indication and deviation
Proceed to Code 41, "Erroneous
Indication"
8.4
Check propeller
operation
Refer to MT Propeller Manual for
inspection instruction of propeller
Repair / Replace Propeller
according to MT instructions
Содержание Cessna 172
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