MIL-S-62549 Semitrailer, Low Bed, 40 Ton Nominal Payload For Transportation Of Heavy Engineer Construction Equipment, M870A2This specification covers a level frame, low bed semitrailer equipped with a folding gooseneck for front loading and movement of heavy engineer construction equipment.

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MIL-S-62549(AT)

4.4.1.1 Sampling, process average. Sampling may be initiated if the process average for the first 50 consecutively serial numbered trailers inspected, is less than the Acceptable Quality levels (AQL) specified in the classification of defects for critical, major, and minor defects. Process average will be computed as follows:

Number of defects x 100 Process average = Number of trailers inspected

If the computed process average exceeds the specified AQL, the 100% inspection shall be performed and continued until such time that the process average for 50 consecutively serial numbered trailers is less than the specified AQL. When sampling is authorized, MIL-STD-105, level II will apply.

4.4.2 Samples. Samples shall consist of complete semitrailers with all on-vehicle-equipment

(OVE) installed.

4.4.3 Examinations. Visual, dimensional, and preliminary functional examination shall consist of examination of trailers for conformance to the applicable drawings and the requirements of this specification. Examinations shall be preformed utilizing the classification of defects in table VI with AQLs, as specified.

TABLE VI. Classification of defects.