Recommendation R20020057

Recommendation issued to: Embraer-Empresa Brasileira de Aeronautica

Recommendation details
Output No: R20020057
Date issued: 04 November 2002
Safety action status:
Background: Why this Recommendation was developed

Output text

Safety Recommendation

The Australian Transport Safety Bureau recommends that Empresa Brasileira De Aeronautica consider development of a modification for the fire suppression system of its aircraft so that a pilot is provided with an in flight indication of an uncommanded discharge of fire retardant.

Initial response
Date issued: 03 January 2003
Response from: Embraer-Empresa Brasileira de Aeronautica
Action status: Open
Response text:

ATSB Note: Whereas no formal response has been received from Embraer, they did respond during the directly involved parties comment process. That comment indicated that they considered one occurrence in 7 million flying hours did not constitute a cause for specific action.

Further correspondence
Date issued: 15 March 2003
Response from: Embraer-Empresa Brasileira de Aeronautica
Response status: Closed - Not Accepted
Response text:

The ATSB received correspondence from CENIPA, Brazil that incorporated further comment from the manufacturer relating to this recommendation.

Although the relocation of the fire bottle may help in the prevention of an un-commanded discharge due to bottle overheat, this modification will not be effective if the system is to be exposed to a fire continuously fed by fuel for a time higher than the 5 minutes required by the existing certification standards.
Embraer recommends an analysis to be carried out to evaluate the benefits of adding a warning of "inadvertent fire extinguishers depletion" since:
- Regardless of having or not fire extinguishers, the pilot procedures are the same,
i.e shutting down the engine and closing the SOV, which will discontinue the fire
- There is already a requirement to check the extinguishing bottles prior to each

Last update 03 April 2012