Criticism of BASI Occurrence Brief
5.17 The BASI Occurrence Brief dealing with the Captain Kolver incident attracted criticism from both CASA and British Aerospace. In a letter to the inquiry, dated 16 September 1999, Mr Toller of CASA, stated that CASA had responded to the draft Occurrence Brief expressing concern about aspects of the draft and seeking additional information concerning certain claims made in the draft:
I am most concerned that CASA did not receive a response to its letter and that the final Report in no way acknowledges our comments which, in my view provided information which should have significantly influenced its
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content.
5.18 CASA’s submission to the inquiry set out a letter which was sent to Dr Rob Lee of BASI on 3 June 1999 relating to the BASI draft Occurrence Brief. This letter read in part:
You recommend that CASA, in conjunction with the aircraft manufacturer, investigate failures within the engine. This was done in considerable detail and resulted in the manufacturer sending a team to discuss the issues with CASA and the major Australian operators. The engine design is not unusual, in that if a seal fails upstream of the bleed air take-off, some fumes can pass into the air conditioning system. However, they then pass through the conditioning packs, filters and ducting before distribution into the aircraft. In trials to measure contamination from a failed seal, a seal was removed and the engine run - no harmful fumes passed into the cabin. The conclusion of the manufacturer and the UK CAA, who issued the type certificate for the aircraft, is that the aircraft meets the requirements for a type certificate and is safe for all operations. 15
5.19 Captain Siebert of NJS expressed the following criticism of the Occurrence Brief during his evidence to the inquiry:
The BASI investigation failed to address the aviation medicine aspects of the incident. …
The maintenance procedures detailed in the BASI investigation report were incorrect with respect to the airconditioning units. …
NJS is in agreement with the CASA assessment reported to the committee during the Canberra hearings that the BAe146 meets all airworthiness regulatory requirements. There was no flight safety compromised during the night freighter incident as existing procedures acted to control the hazard.16
14 Submission 20, CASA, p 1
15 Submission 20, CASA, pp 6-7
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