MIL-PRF-24755B(SH)
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
Type and composition required (see 1.2).
c.
Whether nonmagnetic fan-motor units are required (see 3.2.4).
d.
Shock (see 3.10.1).
e.
Bellmouth (see 3.15.4).
f.
Thermal protection (see 3.18.1).
g.
h.
Motor bearings, quiet operation (see 3.18.4).
i.
When casing pressure test is required (see table IV), specify test conditions if other than standard (see
j.
k.
Resilient mountings (see 4.7.7).
Packaging requirements (see 5.1).
l.
m. Drawing approval is required (see 6.4).
Final drawings are required (see 6.4.1).
n.
o.
Shock and vibration mitigation (see 6.5).
6.3 First article. When first article inspection is required, the contracting officer should provide specific
guidance to offerors whether the item(s) should be a pre-production sample, a first article sample, a first production
item, a sample selected from the first lot production items, a standard production item from the contractor's current
inventory (see 3.1), and the number of items to be tested as specified in 4.2. The contracting officer should also
include specific instructions in acquisition documents regarding arrangements for examinations, approval of first
article test results, and disposition of first articles. Invitations for bids should provide that the Government reserves
the right to waive the requirement for samples for first article inspection to those bidders offering a product which
has been previously acquired or tested by the Government, and that bidders offering such products, who wish to rely
on such production or test, must furnish evidence with the bid that prior Government approval is presently
appropriate for the pending contract. Bidders should not submit alternate bids unless specifically requested to do so
in the solicitation.
6.4 Approval. The contract should require (see 6.2) that two prints of the fan assembly drawing; and two prints
of the motor proposed for use with the fan drawings be submitted for approval by the acquisition activity unless the
drawings have been previously approved within the last five years.
6.4.1 Final drawings. When final drawings are required (see 6.2) and comments on new drawings are
approved, adjudicated or reconciled, the contractor has a responsibility to: (1) forward final fan and motor drawings
to acquisition activity; and (2) include special requirements of the contract or order prior to distribution of final
drawings.
6.4.2 Identifying numbers. A national stock number (NSN) and a component identification number (CID No.)
will be assigned by the Government after drawing approval. The contractor has a responsibility to: (1) identify
these numbers in shipping papers; and (2) mark these numbers on each fan and motor identification plates.
6.5 Shock and vibration mitigation. In addition to packaging requirements specified in the contract, all levels
of packaging should employ a shock and vibration system that will ensure parts of the unit, such as bearings, are not
damaged due to normal shock and vibration that occur during handling and shipments.
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