Commonwealth legislation

AD/R22/45 - Throttle Governor and Low RPM Warning

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

Mandates adjusting the R22 low‑RPM warning to activate at 96–97% rotor RPM and installing or upgrading a Robinson throttle/collective governor on R22 helicopters S/N 0002–2537. Operators must follow the manufacturer maintenance/manual or kit instructions and amend the flight manual by 30 September 1996. The Civil Aviation Safety Authority requires these actions; owners/operators pay for and carry out the work. The stated purpose is to raise the warning threshold and require an improved governor to change when and how low‑RPM warnings and governor use occur.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/R22/45 - Throttle Governor and Low RPM Warning.

AD/R22/45 - Throttle Governor and Low RPM Warning

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source
Robinson R22 Series Helicopters

AD/R22/45 Throttle Governor and Low RPM Warning 11/96

Applicability: All R22 series helicopters S/N 0002 through to 2537 inclusive.

Requirement: 1. Adjust the P/N A569-1 or -5 low RPM warning unit so that the warning horn and caution light activate when the main rotor RPM is between 96% and 97% rotor RPM in accordance with the procedures contained in the Model R22 maintenance manual.

2. For helicopters that do not have a governor currently installed, install a Robinson Helicopter Company K1-67-2 Governor Field Installation Kit in accordance with the kit instructions.

3. For helicopters that have a throttle/collective governor currently installed, upgrade the governor with a Robinson Helicopter Company K1-67-3 governor Upgrade Kit in accordance with the kit instructions.

Note 1: A flight manual amendment is required to the Flight and Manoeuvre Limitations Section.

Note 2: FAA AD 96-11-08 Amdt 39-9633 and Robinson SB-80A dated 6 June 1995 refers.

Note 3: FAA AD 96-11-08 Amdt 39-9633 supersedes FAA AD 82-23-51 Amdt 39- 4645 the subject of AD/R22/14 which has now been cancelled.

Compliance 1. Unless previously carried carry out, action in accordance with Requirement 1 prior to 30 September 1996.

Unless previously carried out, action in accordance with Requirement 2 or 3, as applicable, prior to 30 September, 1996.

Background: The FAA has mandated installation of an improved throttle governor and adjustment of the low RPM warning unit threshold to increase RPM at which the warning horn and caution light activates and also revised the R22 flight manual to prohibit flight with the improved throttle governor selected off except in certain operational situations. This Directive supersedes AD/R22/14, which has been cancelled.

Source text

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

1 AD/R22/45 - Throttle Governor and Low RPM Warning