“The fact that the navigation course of the aircraft had been altered in the computer had been disclosed by the chief inspector in his report dated 31 May 1980, 6 months after the disaster. But it was not until the Commission of Inquiry began sitting that the airline publicly admitted that this had occurred.”
The effect of the absence of general publicity that the information was given rather than its ready provision by the airline to Mr. Chippindale on the day after his return from the crash site is described in the remaining portion of paragraph 48 which continues in the following way:
“Then the chief
inspector went on to say in his report (paragraph
2.5):
’The error had
been discovered two flights earlier but neither crew
of the previous flight
or that of the accident flight were advised
of the error by the
flight despatcher prior to their departure.’
The chief inspector did not make it clear, however, that the computer flight path of TE 901 had been altered before the flight, and that the alteration had not been notified to the air crew. Had that fact been disclosed in the chief inspector’s report then the publicity attending the report would undoubtedly have been differently aligned ... the news blackout imposed by the chief executive was very successful. It was not until the hearings of this Commission that the real magnitude of the mistake by Flight Operations was publicly revealed.”
Concerning that last part of paragraph 48 it seems that the Commissioner’s remark immediately following the extract from paragraph 2.5 is inaccurate. It appears to suggest either that the chief inspector was unaware of the fact that the alteration to the co-ordinates “had not been notified to the air crew”; or that if he had been made aware of that fact then he had failed to bring it to public attention in his report as the next sentence suggests. But Mr. Chippindale was both aware of all this and he said so. In paragraph 1.17.1 he explicitly stated:
“This error was not corrected in the computer until the day before the flight. Although it was intended that it be drawn to the attention of the previous crew, immediately prior to their departure this was not done, nor was it mentioned during the pre-flight dispatch planning for the crew of the accident flight”. (Emphasis added.)
The “pre-flight dispatch planning” mentioned in those last words was the occasion of final briefing of the aircrew immediately before the aircraft left Auckland on the morning of 28th November 1981.