AD 80-16-05 ACTIVE

80-16-05 RAJAY INDUSTRIES, INC.: Amendment 39-3865. (Air-Ox, Dye-Ox) Applies to Sky-Ox Model 2600 (except those identified by Part Number 500014-01 or -02), 2800 (except those identified by Part Number 500016-01) and 2900 (except those identified by Part Number 500015-01) series oxygen regulators. Compliance is required as indicated, unless already accomplished. To prevent physical impairment from inadequate oxygen supply, accomplish the following:

NOTE 1: Sky-Ox Model 2800 and 2900 series regulators may be installed by Supplemental Type Certificate (STC) on Beech Model 33, 35, 55 and 95 series airplanes; Cessna Model 180 and 182 series airplanes; and Piper Model PA30, PA39, PA32, and PA34 series airplanes.

NOTE 2: Sky-Ox Model 2800 and 2900 series regulators may be installed on various general aviation airplanes through field approval, (FAA Form 337).

NOTE 3: Sky-Ox Model 2600 series oxygen regulators are used in portable (carry-on) oxygen systems.

a) Within thirty (30) days after the effective date of this AD placard all Model 2900 series oxygen regulators: "OXYGEN SYSTEM LIMIT 20,000 FEET". When the Model 2900 oxygen regulator is reset per Rajay Sky-Ox Service Manual 500231, Rev. A. or Rev. B, the placard may be removed. Identify regulators reset per manufacturer's instructions by marking "A" below the serial number.

b) Within sixty (60) days after the effective date of this AD, reset Model 2600 and 2800 series oxygen regulators per Rajay Sky-Ox Service Manual 500231, Rev. A, or Rev. B. Identify reset regulators as per paragraph (a).

c) Alternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.

This amendment becomes effective August 11, 1980.