84-15-05 BELL HELICOPTER TEXTRON, INC.: Amendment 39-4891. Applies to all Bell Helicopter Textron, Inc., Model 214ST helicopters certified in all categories equipped with main rotor collective lever assembly P/N 214-010-474-109 or -113.
Compliance is required as indicated, unless already accomplished.
To prevent failure of the collective lever assembly, remove and replace the lever assembly prior to accumulating 1,250 hours time in service. For helicopters that have accumulated more than 1,250 hours time in service on the lever assembly, remove and replace the lever assembly within the next 50 hours time in service or by September 1, 1984, whichever comes first.
This amendment becomes effective August 3, 1984.