Commonwealth legislation

AD/JBK 117/21 Amdt 1 - Rescue Winch Operation

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Sets emergency procedures for BK117 helicopters (serial numbers 1001–1024 except 1009; and 1009, 1025 and later) to stop an uncontrollable rescue winch by cutting power.

Crew must turn off specified switches, shed non‑essential electrical loads above stated generator current limits, land as soon as possible, and disconnect the winch electrical connector before re‑powering; the note states the winch motor cannot be isolated by the WINCH CONT circuit breaker or the Rescue Winch main switch.

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Current sections

Direct links to the current provisions in AD/JBK 117/21 Amdt 1 - Rescue Winch Operation.

UNCONTROLLABLE WINCH PROCEDURES

BK117 Helicopters Serial Numbers 1001 through 1024 except 1009

When up or down operation of the winch becomes uncontrollable, interrupt the supply of power to the motor and stop the winch operation in accordance with the following procedure:

The cable operation cannot be controlled.

RESCUE WINCH Switch ————————————— OFF 2. BUS TIE Switch ————————————————— OFF 3. PWR SEL Switch ———————————————— OFF
1. GENERATOR I Switch —————————————— OFF
2. Cut any unnecessary load if the load of the generator exceed 150 Amps.
3. Land as soon as possible.
4. Disconnect the Rescue Winch electrical connector, then re-supply power.

Note:

The power supply to the winch motor cannot be interrupted by the WINCH CONT circuit breaker or

RESCUE WINCH MAIN SWITCH OFF.

Annex A

UNCONTROLLABLE WINCH PROCEDURES

BK117 Helicopters Serial Numbers 1001 through 1024 except 1009

When up or down operation of the winch becomes uncontrollable, interrupt the supply of power to the motor and stop the winch operation in accordance with the following procedure:

The cable operation cannot be controlled.

RESCUE WINCH Switch ————————————— OFF 2. BUS TIE Switch ————————————————— OFF 3. PWR SEL Switch ———————————————— OFF
1. GENERATOR I Switch —————————————— OFF
2. Cut any unnecessary load if the load of the generator exceed 150 Amps.
3. Land as soon as possible.
4. Disconnect the Rescue Winch electrical connector, then re-supply power.

Note:

The power supply to the winch motor cannot be interrupted by the WINCH CONT circuit breaker or

RESCUE WINCH MAIN SWITCH OFF.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

UNCONTROLLABLE WINCH PROCEDURES UNCONTROLLABLE WINCH PROCEDURES

UNCONTROLLABLE WINCH PROCEDURES

BK117 Helicopters Serial Numbers 1001 through 1024 except 1009

When up or down operation of the winch becomes uncontrollable, interrupt the supply of power to the motor and stop the winch operation in accordance with the following procedure:

The cable operation cannot be controlled.

RESCUE WINCH Switch ————————————— OFF 2. BUS TIE Switch ————————————————— OFF 3. PWR SEL Switch ———————————————— OFF
1. GENERATOR I Switch —————————————— OFF
2. Cut any unnecessary load if the load of the generator exceed 150 Amps.
3. Land as soon as possible.
4. Disconnect the Rescue Winch electrical connector, then re-supply power.

Note:

The power supply to the winch motor cannot be interrupted by the WINCH CONT circuit breaker or

RESCUE WINCH MAIN SWITCH OFF. RESCUE WINCH MAIN SWITCH OFF.

Annex A

UNCONTROLLABLE WINCH PROCEDURES

BK117 Helicopters Serial Numbers 1001 through 1024 except 1009

When up or down operation of the winch becomes uncontrollable, interrupt the supply of power to the motor and stop the winch operation in accordance with the following procedure:

The cable operation cannot be controlled.

RESCUE WINCH Switch ————————————— OFF 2. BUS TIE Switch ————————————————— OFF 3. PWR SEL Switch ———————————————— OFF
1. GENERATOR I Switch —————————————— OFF
2. Cut any unnecessary load if the load of the generator exceed 150 Amps.
3. Land as soon as possible.
4. Disconnect the Rescue Winch electrical connector, then re-supply power.

Note:

The power supply to the winch motor cannot be interrupted by the WINCH CONT circuit breaker or

RESCUE WINCH MAIN SWITCH OFF.

UNCONTROLLABLE WINCH PROCEDURES UNCONTROLLABLE WINCH PROCEDURES

UNCONTROLLABLE WINCH PROCEDURES

BK117 Helicopters Serial Numbers 1009, 1025 and subsequent

When up or down operation of the winch becomes uncontrollable, interrupt the supply of power to the motor and stop the winch operation in accordance with the following procedure: