NTSB Identification: ANC84IA066.
The docket is stored on NTSB microfiche number 27123.
Scheduled 14 CFR operation of AIR PAC
Incident occurred Friday, May 11, 1984 in UNALASKA, AK
Aircraft: BRITISH AEROSPACE BAE-146, registration: N146AP
Injuries: 7 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

A 'NO BRAKE CONDITION' WAS EXPERIENCED WHILE THE PLT WAS USING THE YELLOW BRAKE SYS DURING A LANDING. THE NORMAL LANDING PROCEDURE CALLS FOR USING THE GREEN SYS. DURING THE ROLL-OUT, THE PLT SELECTED THE EMERGENCY YELLOW SYS & SUBSEQUENTLY LOCKED THE BRAKES. HE STATED THAT THE YELLOW HYDRAULIC SYS WAS USED BECAUSE OF A PROBLEM WITH THE GREEN SYS ON THE PREVIOUS DAY. ALSO, HE REPORTED THAT MANAGEMENT HAD DECIDED TO USE THE YELLOW SYS. THE SPECIFIC LEVEL OF MANAGEMENT THAT HAD REPORTEDLY MADE THIS DECISION WAS NOT IDENTIFIED.

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

MAINTENANCE..INADEQUATE..COMPANY/OPERATOR MANAGEMENT

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

IMPROPER DECISION..COMPANY/OPERATOR MANAGEMENT

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

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..PERFORMED..PILOT IN COMMAND


Contributing Factors

LANDING GEAR,NORMAL BRAKE SYSTEM..INOPERATIVE

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