Commonwealth legislation

AD/SWSA226/87 - Operation of Deicing Boots

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive requires operators of the listed SA226/SA227 models with pneumatic deicing boots to revise the Aircraft Flight Manual limitations to require activation of wing and tail leading-edge deicing boots at the first sign of ice or on ice-detector annunciation, and to use automatic cycling if available or manually cycle as needed until the aircraft is clear. It affects aircraft operators (who must update manuals and train crews) and flight crews (who must change in‑flight procedures); regulators issue and enforce the directive.

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Current sections

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AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/SWSA226/87 Operation of Deicing Boots

AD/SWSA226/87 Operation of Deicing Boots 7/2000

Applicability: All models SA226-T, SA226-AT, SA226-T(B), SA227-AT, SA227-TT, SA226-TC,

SA227-AC, SA227-PC, SA227-BC, SA227-CC and SA227-DC aircraft equipped with pneumatic deicing boots.

Requirement: Revise the Limitations Section of the aircraft's Aircraft Flight Manual (AFM) by incorporating the following:

" Except for certain phases of flight where the AFM specifies that deicing boots should not be used (e.g., take-off, final approach, and landing), compliance with the following is required.

Wing and Tail Leading Edge Pneumatic Deicing Boot System, if installed, must be activated:

\- At the first sign of ice formation anywhere on the aircraft, or upon annunciation from an ice detector system, whichever occurs first; and

\- The system must either be continued to be operated in the automatic cycling mode, if available; or the system must be manually cycled as needed to minimize the ice accretions on the airframe.

The wing and tail leading edge pneumatic deicing boot system may be deactivated only after:

\- Leaving known or observed/detected icing that the flight crew has visually observed on the aircraft or was identified by the on-board sensors; and

\- After the airplane is determined to be clear of ice."

Alternatively, a copy of this Directive may be inserted in the Limitations Section of the Aircraft Flight Manual preceding the paragraph covering Operation in Icing Conditions.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/SWSA226/87 Operation of Deicing Boots AD/SWSA226/87 Operation of Deicing Boots 7/2000

AD/SWSA226/87 Operation of Deicing Boots 7/2000

Applicability: All models SA226-T, SA226-AT, SA226-T(B), SA227-AT, SA227-TT, SA226-TC,

SA227-AC, SA227-PC, SA227-BC, SA227-CC and SA227-DC aircraft equipped with pneumatic deicing boots.

Requirement: Revise the Limitations Section of the aircraft's Aircraft Flight Manual (AFM) by incorporating the following:

" Except for certain phases of flight where the AFM specifies that deicing boots should not be used (e.g., take-off, final approach, and landing), compliance with the following is required.

Wing and Tail Leading Edge Pneumatic Deicing Boot System, if installed, must be activated:

\- At the first sign of ice formation anywhere on the aircraft, or upon annunciation from an ice detector system, whichever occurs first; and

\- The system must either be continued to be operated in the automatic cycling mode, if available; or the system must be manually cycled as needed to minimize the ice accretions on the airframe.

The wing and tail leading edge pneumatic deicing boot system may be deactivated only after:

\- Leaving known or observed/detected icing that the flight crew has visually observed on the aircraft or was identified by the on-board sensors; and

\- After the airplane is determined to be clear of ice."

Alternatively, a copy of this Directive may be inserted in the Limitations Section of the Aircraft Flight Manual preceding the paragraph covering Operation in Icing Conditions.