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【范围】
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This document covers flexible and semiflexible, reinforced and unreinforced air hoses fabricated from
laminated and impregnated fabric, intended for use in aircraft heating, air conditioning, ventilating,
defrosting and/or deicing systems.
1.1 Classifications:
Hoses furnished under this document shall be of the following operating temperature classifications and
constructions shown in Table 1.
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1.2 Grades:
Grades shall be designated by a letter code as shown in Table 2, and utilized as required on standards
and drawings to differentiate hose operating pressures, and to specify hose classification.
1.3 Forms:
The hose shall be wire reinforced in one of the following forms:
a. Form 1: Helical - wire (metallic or nonmetallic) reinforcement which can be axially compressed, but not
elongated beyond its free length.
b. Form 2: Helical convoluted - Wire (metallic) reinforcement, if specified, which can be axially
compressed and elongated.
c. Form 3: Annular convoluted - Wire ring reinforcement if required for pressure, which can be axially
compressed and elongated.
d. Form 4: Sleeve - No reinforcement other than fabric which cannot be axially compressed or elongated.strRefField
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