Resumo
We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model 269A, 269A-1, 269B, 269C, 269C-1, 269D, and TH-55A helicopters. This AD requires repetitively inspecting and lubricating the tail rotor (T/R) driveshaft splined fittings. This AD was prompted by a report that the T/R driveshaft can disconnect due to deterioration of the splined coupling. The actions are intended to detect and prevent excessive wear of the splined coupling, which could lead to failure of the T/R driveshaft and subsequent loss of control of the helicopter.
Detalhes da diretiva
Número da AD
FAA-2015-1008
Número do documento
2015-28313
Tipo
Rule
Data de publicação
November 10, 2015
Data de vigência
December 15, 2015
Fabricante afetado
Sikorsky Aircraft Corporation (Type Certificate Previously Held by Schweizer Aircraft Corporation)
Criticidade
important
Emergência
Não
Docket ID
Docket No. FAA-2015-1008
Tópicos
Documentos oficiais
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