Logistical Evaluation (Phase F) of U-21A Airplane.
Abstract
The US Army Aviation Test Board conducted a logistical evaluation (Phase F) of the U-21A Airplane during June 1967 - September 1968. The test program consisted of compiling, evaluating, and reporting data obtained as a result of flying and maintaining the airplanes. Two U-21A's accumulated a total of 2,383.8 flight hours during the test period. Consumption rates of six parts, including two TBO items, were considered excessive. Inspection cycles, tool requirements, and technical manuals were satisfactory. The maintenance-man-hours-to-flight-hour ratio was 1.2 to 1.0, and the U-21A was easy to maintain in comparison to the U-8() Army airplanes. Three design deficiencies were noted. It was concluded that the U-21A Airplane is maintainable, supportable, and reliable. It was recommended that: the design deficiencies be corrected; the service life of those components with high consumption rates be improved; and product-improvement tests be conducted as improvements are developed and model changes occur. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1968
- Accession Number
- AD0843669
Entities
People
- M. Virgil Mingus