TM55-2840-251-23
Section X ENGINE TESTING (Continued
1-95
GROUND TESTING OF ENGINE
ON MOBILE TRAILER ASSEMBLY
(AVIM)
1.
Ground Testing. Ground testing of engine, using
mobile trailer assembly, is intended to give an engine a
thorough test for mechanical soundness and for correct
indications of operating parameters prior to installation in
the aircraft. To eliminate unnecessary ground testing, the
ground test procedures or checks are divided as follows:
Check No. 1 - Pre-start.
Check No. 2 - Engine start.
Check No. 3 - Part power trim stop.
Check No. 4 - Engine performance check.
Check No. 5 - Engine shut- down. 2.
2.
Check No. 1 - Pre-start.
a.
Install engine in mobile test trailer in
accordance with instructions contained in TM55-4920-328-
13.
b.
Thoroughly inspect engine inlet and trailer to
insure that it is clear of loose nuts, bolts, tools and other
objects which could cause engine damage and possible
subsequent engine failure.
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