BHT-212-MM-1
5-00-00
Page 234 Rev. 15 29 NOV 2013 Export Classification C, ECCN 9E991
Table 5-1. Component Overhaul Schedule (Cont)
NOTES:
Operating time specified for overhaul of any given part number in this schedule applies to all successive
dash numbers (or suffixes), unless otherwise specified.
If tube assemblies 212-010-311-ALL or 540-011-319-001 are installed on stabilizer bar assembly
204-011-326, overhaul interval is conditional.
Overhaul the following items every 2500 hours of operation:
a. Idler assembly 209-011-711-ALL
b. Lever assembly 209-011-712-ALL
c. Nut 212-010-706-ALL
d. Crosshead 212-010-707-ALL or 212-010-775-ALL
e. Link assembly 209-011-713-ALL
Overhaul schedule of transmission quills is same as transmission in which quills are installed, with
exception of rotor brake quill.
Special inspection is required at 3000 hours, and overhaul is 6000 hours.
Special inspection is required at 3000 hours and overhaul is 5000 hours. If mast assembly
204-040-366-021 is installed in transmission 212-040-001-115, -123, and -131, mast assembly TBO is
2500 hours.
If cylinders have Greene, Tweed type seals installed, overhaul is conditional. Cylinders with assembly
date of April 30, 1974 or later were fitted with Greene, Tweed type seals at manufacturer. However,
cylinders without Greene, Tweed type seals shall be overhauled at 1000 hours.
Engine combining gearboxes that have incorporated the preceding referenced Pratt & Whitney Canada
Service Bulletin numbers 5119, 5177, 5185, 5186, 5198, and 5199 are increased to 4000 hours TBO.
Refer to TB 212-91-138.
Refer to BHT-212-SI-87 for maintenance information.
Hydrostatic test in accordance with specification DOT-4 DA, DOT-4 DS700, or DOT-SP-7945, as
marked on the reservoir, every 5 years or prior to refill after leakage or discharge. Extensions to this item
are not permitted.
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