Role of Power Distribution System Tests in Final Assembly of a Military Derivative Airplane
Date Published: 2009-11-10
Paper Number:2009-01-3121
DOI: 10.4271/2009-01-3121
Citation:
Hemmaplardh, K., Milburn, K., Matthews, T., Chang, K. et al., "Role of Power Distribution System Tests in Final Assembly of a Military Derivative Airplane," SAE Int. J. Aerosp. 3(1):10-15, 2010, doi:10.4271/2009-01-3121.
Author(s):
K. Paul Hemmaplardh - The Boeing Co.
Kenneth M. Milburn - The Boeing Co.
Timothy W. Matthews - The Boeing Co.
Kevin K. Chang - The Boeing Co.
Ludwig S. Donaty
Boeing has contracts for military application of twin engine airplanes generically identified in this paper as the MX airplane. Unlike previous derivatives, the MX airplanes are produced with a streamlined manufacturing process to improve cost and schedule performance. The final assembly of each MX airplane includes a series of integration tests, called factory functional tests (FFTs), which are modified from those of typical commercial versions and verify correctness of equipment installation and basic functionalities.
Two airplanes have been through the production line resulting in a number of FFT lessons learned. Addressed are the power distribution lessons learned: 1) the expanded coverage of the basic automated power-on generation system test, 2) the need for a manual wire continuity test, 3) salient features of the power distribution tests, and 4) keys to make first pass power distribution test smooth and successful. These points are discussed in generic terms to stay within non-proprietary confines and where not prohibited by US export laws and regulations, including those of International Traffic in Arms Regulations (ITAR) and the US Export Administration Regulations (EAR).
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