Expert Opinion
Torqued: Routine Manual Deviations Can Have Major Safety Consequences
The mechanics were candid about the maintenance errors that began the chain of events that ultimately led to the in-flight emergency.

The just-released accident report on the Airbus A319 that lost both doors on one engine’s fan cowl on takeoff from London Heathrow Airport in May 2013 is a must-read for anyone involved in aviation safety, whether at a major airline or manufacturer, at an air taxi or just flying or maintaining GA aircraft. The issues raised by the events leading to the accident, and as the events were unfolding in the airplane, affect many areas of aviation–from aircraft design to maintenance to pre-flight inspections to communications between cabin and flight crew during an in-flight emergency. But the most significant aspect of the report relates to maintenance and maintenance human factors. After all, it was maintenance errors that began the chain of events that ultimately led to the in-flight emergency.

In this accident, the precipitating factor was that the engine fan cowl doors detached on takeoff because they had not been properly closed and latched after routine overnight maintenance. The A319 was substantially damaged and the crew had to make an emergency landing. The accident report details not only the obvious failures to comply with maintenance manual procedures but also less obvious contributing factors that left the cowling doors unlatched, including the mechanics’ schedules and likely effects of fatigue. The report also highlights impediments to discovering the open doors during the pre-flight inspections by the crew and ground personnel. In addition, it makes recommendations for, among other things, changing the design of fan cowl door latches to prevent a recurrence.

John Goglia
Writer
About the author

With more than 40 years experience in the aviation industry, The Honorable John Goglia, was the first and only Airframe and Powerplant mechanic to receive a presidential appointment to the National Transportation Safety Board (NTSB). He served from August 1995 to June 2004.   

As a Board Member, Mr. Goglia distinguished himself in numerous areas of transportation safety. In particular, he was instrumental in raising awareness of airport safety issues, including the importance of airport crash fire and rescue operations and the dangers of wildlife at airports. He played a key role in focusing international attention on the increasing significance of aircraft maintenance in aviation accidents. He pressed, successfully, for greater integration of civilian and military safety information, becoming a featured speaker at national aviation symposiums attended by military leaders and major defense contractors. He is a leading proponent of airplane child safety seats.

Prior to becoming a Board Member, Mr. Goglia held numerous positions in the airline industry. He started as a mechanic for United Airlines and eventually joined Allegheny, which became USAir. Additionally, he was involved for more than 20 years as a union flight safety representative on accident investigation teams. There, he developed a safety program for his union, the International Association of Machinists, and was its representative for NTSB investigations. For twelve years, he operated his own aircraft service company.

Numerous prestigious groups have recognized Mr. Goglia’s contributions to aviation safety.  Aviation Week & Space Technology awarded him a coveted 2004 Laurel for his outstanding service as an NTSB Board member.  The Society of Automotive Engineers presented him with the Aerospace Chair Award for outstanding leadership in 2003 and the Marvin Whitlock Award for outstanding management accomplishment in 2002.

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