MIL-S-6551A(USAF)
5.1.3 Level c. Seals shall be clean dry and individually packaged in manner that will afford adequate protection against corrosion, deteriorationand physical damage during shipment from supply source to the first receiving activity.
5.2 Packing. Packing shall be level A, B or C as specified.
5.2.1 Level A. Seats preserved and pack.aged as specified in 5.1.1 shall be packed in a container conforming to PPP-B-601 overseas type. Skid shall be provided to facilitatemachine handling. As far as practical, container shall be of uniform size and shape and of minimum tare and cube consistent with the protection required. Closure and strapping shall be in accordance with the appendix of the box specification.
5.2.2 Level B. Level B shall be the same as Level A except PPP-B-601 shall be domestic type. Skids shall be provided to facilitatemachine handling.
5.2.3 Level C. The seats preserved and packaged as specified in 5.1 shall be packed in manner to insure carrier acceptance and safe delivery at destination. Containers shall be in accordancewith either the Uniform Freight ClassificationRules or regulations of other carrier as applicable to the mode of transportation.
5.3 Physical Protection. The seats shall be cushioned, anchored, blocked
and braced in accordancewith MIL-STD-1186. The freefall drop test, edgewise
drop tests and commercial drop tests shall be in accordance with Appendix A
of MIL-STD-1186$ The tests are not required when Level C packing is specified.
5.4 Marking. In addition to any special marking required by the contract or order (see 6.2), interior package and exterior shipping containers shall be marked in accordance with MIL-STD-129.
6. NOTES
6.1 Use. These downward ejection seats are intended for use in aircraft by the pilot, co-pilot, and other crew members.
* 6.2 Ordering data. Invitations for bid, contracts and purchase orders should specify the following:
a. Title, number, and date of this specification.
b. Applicable levels of preservationand packaging, and packing.
* 6.2.1 Preproduction tests. It is expected that the contract or purchase order will specify that a minimum of three seats will be required as
preproduction samples to be subjected to preproduction tests by the contractor to determine compliancewith the requirements of this specificaD tion and that one seat will be required as a preproduction sample to be submitted to the procuring agency.
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