NTSB Identification: FTW85FA050.
The docket is stored on NTSB microfiche number 27106.
Accident occurred Tuesday, November 13, 1984 in CLINT, TX
Aircraft: HUGHES 269B, registration: N9336F
Injuries: 2 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

N9336F, CRASHED WHILE ON A TRAINING FLT. THE CERTIFIED FLT INSTRUCTOR & HIS STUDENT WERE KILLED. INVESTIGATION REVEALED THAT THE MAIN DRIVE SHAFT THRUST BEARING HAD FAILED. A SERVICE BULLETIN DATED 1968 MANDATED REPLACEMENT OF THE BEARING AT 300 HR TIME IN SERVICE INTERVAL.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ROTOR DRIVE SYSTEM,MAIN ROTOR MAST(DRIVE SHAFT)..BINDING(MECHANICAL)

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ROTOR RPM..INADEQUATE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MAINTENANCE,COMPLIANCE WITH AD..NOT PERFORMED..COMPANY MAINTENANCE PERSONNEL

Index for Nov1984 | Index of months