MIL-DTL-5099C
4.2.1 First article samples. Unless otherwise specified, as soon as practicable after
award of a contract or order, the manufacturer shall submit three cabin air pressure indicators for
first article testing. The sample units shall be representative of the construction, workmanship,
components, and materials to be used during production. When a manufacturer is in continuous
production of these cabin air pressure indicators from contract to contract, submission of further
first article samples on the new contract may be waived at the discretion of the procuring activity
(see 6.2). Approval of the first article samples or the waiving of the first article inspection does
not preclude the requirements of submitting to the conformance inspection. The first article
samples shall be furnished to the government as directed by the contracting officer (see 6.2).
Each sample unit shall be plainly identified by a securely attached durable tag marked with the
following information (less quotes/brackets):
"Sample for first article"
"Submitted by [name] [date] for tests in accordance with the requirements of
specification
MIL-DTL-5099 under authorization [reference letter authorizing test]"
"Indicator, Cabin Air Pressure"
[Manufacturer's Part No.]
[MIL-DTL Part No.]
[Name of manufacturer]
4.2.1.1 Disposition of first article samples. Upon completion of the first article
inspection, all the applicable inspection reports and, when applicable, recommendations and
comments pertinent for use in monitoring production will be forwarded to the government
contracting officer. The sample units may be consumed or destroyed in the first article
inspection and shall not be considered as part of the quantity to be delivered under contract
(see 6.2).
4.2.2 Reliability assurance testing. Reliability assurance testing, if required for the
purposes of establishing MTBF, shall be as specified by the procurement contract (see 6.2).
Reliability test documentation should conform to the guidelines of MIL-HDBK-781 and shall be
maintained and readily available.
4.3 Conformance inspection. Conformance inspection of the cabin air pressure
indicators shall consist of the individual inspections and tests; and the sampling plans of this
specification as shown in table II.
TABLE II. Conformance inspection and test requirements.
Sampling
Sampling
Reference
Individual
plan A
plan B
Inspections and tests
paragraph
(See 4.3.1)
(See 4.3.2.1)
(See 4.3.2.2)
Examination of product
4.5.1
X
X
X
Case leakage
4.5.2
X
X
X
Scale error (room temp.)
4.5.3
X
X
X
Hysteresis
4.5.4
X
X
X
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