PPRuNe Forums - View Single Post - AAIB investigation to Hawker Hunter T7 G-BXFI 22 August 2015
Old 4th Mar 2017, 13:13
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Courtney Mil
 
Join Date: Nov 2011
Location: Southern Europe
Posts: 5,335
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B2N2,

Page 29 of the report - picture. At X750 feet on the altimeter, the broader part of the needle obscures the thousands of feet and the tens of thousands of feet on the counter.

From page 128 of the report:

‘Analysis has been undertaken to identify the scope of human actions and/or decisions to have contributed to the loop being continued when below the pilot’s stated minimum height at the apex. It is not possible to determine which, if any, of these actions took place based on the evidence available for the HF analysis, but the following accounts are considered credible and feasible:

a. The altimeter may not have been seen or read at the apex of the loop as a result of scan pattern, high workload, allocation of attention, distraction (for instance, from detecting a reduction in thrust during the climb or the airspeed being lower than expected), and/or visual limitations (such as contrast and glare).

b. An inaccurate perception of aircraft height may have been obtained, specifically, that the aircraft was higher than it was as a result of the altimeter displaying the incorrect altitude, a misleading or ambiguous display of the altimeter digit drum [height counter], the altimeter digit drum [height counter] being partially obscured, and/or the altimeter being misread.

c. The minimum height required at apex may have been recalled incorrectly.

d. An escape manoeuvre may have not been selected as a result of the limited time available to select and implement the action, and the guidance and training that the pilot received with regard to performing an escape manoeuvre at the apex of a loop in the Hunter.’
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