Recommendation R20070012

Recommendation issued to: Bombardier Aerospace

Recommendation details
Output No: R20070012
Date issued: 08 June 2007
Safety action status: Closed - No Action
Background: Why this Recommendation was developed

Output text

Safety Issue

Both the operator's and the manufacturer's Quick Reference Handbook (QRH) for the DHC8-300 did not contain adequate guidance for the flight crew to resolve the abnormal operation of the aircraft systems.

Safety Recommendation

The Australian Transport Safety Bureau recommends that Bombardier Aerospace address this safety issue.

Initial response
Date issued: 24 April 2007
Response from: Bombardier Aerospace
Action status: Closed - Not Accepted
Response text:

In general, the report makes continual reference to the lack of adequate QRH procedures associated with a complete loss of airspeed information. The basis of certification for the Q300 and other Part 25 aircraft dictates that a loss of all airspeed information must not occur. Therefore, neither QRH nor AFM procedures are provided. Airspeed information failures of this type are extremely improbable events. In addition, it is not possible to provide accurate guidance to flight crews covering the loss of all airspeed information given the numerous configurations and operating scenarios to which an aircraft may be exposed. Accurate information is provided for the loss of a single airspeed indicator, which was demonstrated by the flight crews handling of the event involving aircraft VH-SBW.

Last update 05 April 2012