Analysis of the findings of a maintenance line operations safety assessment1 (M-LOSA) at a U.K. facility has identified errors — largely procedural errors associated with non-compliance — in 86 percent of observations, British researchers say.2
Most of the errors discovered through the maintenance operations safety survey (MOSS) — as the assessment was called — were classified as inconsequential, according to the report by Marie Langer and Graham Braithwaite of Cranfield University and to a presentation by Langer at the 2012 seminar in Baltimore of the International Society of Air Safety Investigators (ISASI).
Nevertheless, their report said, 34 percent of observations involved errors that “resulted in undesired states mainly associated with aircraft areas not checked for damage at any point during the check, APU [auxiliary power unit] left running unattended or failure to complete all checklist items before certification.”
Although the undesired states did no…
