ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL
Rev.
7
MM-4-57
Aug
22/16
4-52. 200 Hour Inspection Guide – Periodic Inspection
AIRCRAFT REGISTRATION NUMBER:
SIGNATURE:
AIRCRAFT SERIAL NUMBER:
DATE:
HOURS: Engine:
Flight:
200 HOUR INSPECTION GUIDE
INITIAL EACH ITEM AFTER ACCOMPLISHMENT
INITIAL
1. GENERAL
INSPECTION
A. Perform a complete 100 Hour/Annual Inspection.
_________
2. MAIN
ROTOR
ASSEMBLY
A. Inspect the main rotor retention assemblies for:
1) Evidence of ratcheting or binding in the feathering bearings.
_________
2) Proper spring-back of the Lamiflex bearings.
_________
3) Evidence of Lamiflex bearing deterioration.
_________
4) Condition of the Lamiflex Nylatron straps.
_________
5) Condition of the Lamiflex bearing shim installation (Reference paragraph 9-
4, A, (16); and SDB 057).
_________
6) Evidence of O-ring leakage.
_________
7) Security of the spindle retention nut.
_________
8) Evidence of a sheared roll pin at the hinge pin.
_________
9) Evidence of ratcheting or binding of the flapping bearings.
_________
10) Proper preload setting of the retention assemblies in the flapping axis (Does
not apply to retention assemblies installed I/A/W SIL 0147).
_________
11) Proper security of the hinge pin locking tang washer.
_________
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