British Airways 5390
Printed page 16. PDF page 23.
smaller diameter bolts were identified in the detached window British Airways called for a 100 per cent visual inspection of bolt head diameter; this check utilised the fact that the smaller bolt head had 27 per cent less area thanOpen official document at PDF page 23Aircraft Accident Report 1/92: BAC One-Eleven G-BJRT, 10 June 1990