74-24-07 CHROMALLOY: Amendment 39-2021 as amended by Amendment 39-2080. Applies to Chromalloy Model RLB-6 Series rescue locator beacons incorporating battery packs, P/N A3-01-0175, installed in emergency equipment (including, but not limited to, slide-raft combinations and life rafts).
Compliance required as indicated unless already accomplished:
(a) On or before December 2, 1974, remove from service all Chromalloy Model RLB-6 Series rescue locator beacons or the battery packs incorporated in those units.
(b) Contrary provisions of Sections 121.339, 121.353, and 135.163 of the Federal Aviation Regulations notwithstanding, Part 121 and 135 operators of aircraft, equipped with life rafts or slide-raft combinations incorporating Chromalloy Model RLB-6 Series rescue locator beacons may, after removal of such beacons or their battery packs pursuant to paragraph (A), continue to operate the aircraft
(1) After replacing the battery packs with Chromalloy battery packs,P/N P4-01-0044, marked "FAA approved for use only as a replacement battery under AD 74-24-07.";
(2) After replacing the affected beacons with FAA approved replacement beacons; or
(3) Pending compliance with subparagraphs (1) or (2) of this paragraph, after installing in the aircraft an FAA approved portable type emergency locator transmitter that is accessible to the flight crew.
(Note: Chromalloy Model RLB-6 Series rescue locator beacons that incorporate battery packs, P/N P4-01-0044, meet the performance requirements of TSO-C91 except their "low operating temperature" is +29 degrees F).
Amendment 39-2021 was effective upon publication in the Federal Register as to all persons except those persons to whom it was made immediately effective by the telegram, dated November 9, 1974, which contained this amendment.
This amendment 39-2080 is effective upon publication in the Federal Register as to all persons except those persons to whom it was made immediately effective by the telegram, dated November 15, 1974, which contained this amendment.