MIL-PRF-27197E
SAE INTERNATIONAL
SAE-AS5202
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Port or Fitting End, Internal Straight Thread
(SAE documents may be obtained online at https://www.sae.org/ or from SAE World
Headquarters, 400 Commonwealth Drive, Warrendale, PA 15096-0001 USA.)
2.4 Order of Precedence. Unless otherwise noted herein or in the contract, in the event of a
conflict between the text of this document and the references cited herein, the text of this
document takes precedence. Nothing in this document, however, supersedes applicable laws and
regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Qualification. (Item) furnished under this specification shall be products that are authorized
by the qualifying activity for listing on the applicable qualified products list before contract
award (see 4.2 and 6.3).
3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible, provided
that the material meets or exceeds the operational and maintenance requirements, and promotes
economically advantageous life cycle costs.
3.3 Materials. All materials shall be suitably treated to resist corrosion due to electrolytic
decomposition, fungus, salt fog, and any other condition that may be encountered during
operational use and storage. Nonmagnetic materials shall be used for all parts of the indicator
where possible. The use of toxic chemicals, hazardous substances, or ODC s shall be avoided
whenever feasible.
3.4 Interface. (See 6.4.4).
3.4.1 Dimensions. The indicator and case shall conform to Figures 1, and 3 through 5.
3.4.2 System interface. The indicator shall incorporate the following features:
a. A pitot-static pressure-operated IAS mechanism that drives a pointer to IAS on a fixed
dial as shown on figures 2 and 3, as applicable.
b. A static pressure-operated altitude mechanism that drives a moving scale to indicate
the mach number through the window on the moving mask as shown in Figure 2, 4, and 5.
c. The mach number shall be indicated by the IAS pointer on the moving scale at any
combination of airspeed and altitude within the range of the indicator.
3.4.3 Maximum allowable equivalent airspeed (MAEAS pointer. The MAEAS pointer shall
conform to Figure 5. The pointer shall be positioned as a function of equivalent airspeed (EAS)
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