| AD Number | 74-19-02 | Status | Active |
| Effective Date | September 13, 1974 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-1956 |
| Product Type | ["Appliance"] | Product Subtype | Not specified |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Pathfinder Corporation |
| Model(s) | Emergency Locator Transmitters |
74-19-02 PATHFINDER CORPORATION: Amendment 39-1956. Applies to Pathfinder Corporation Emergency Locator Transmitters; all models. Compliance required within the next 60 days, and thereafter at each additional 60 days interval.
To detect corrosion which may, (1) jam the cylindrical G force sensor plunger, or (2) cause inadvertent transmission of an emergency signal, accomplish the following: Inspect the ELT for evidence of corrosion, particularly in the area of the G force sensor plunger, by removing the top dome assembly, reference Pathfinder Installation and Operation Manual. Determine that the plunger is free to move by manually sliding the plunger along the guide rod so as to actuate the switch, and determine that the ELT transmits properly. ELT test transmissions are authorized in the first five minutes of any hour, or at other times if coordinated with the nearest FAA tower or flight service station, for a total of three audio sweeps, reference Advisory Circular 00-35A or 20-81. If any evidence of corrosion or jamming of the plunger is found, or if the ELT does not transmit properly, repair or replace with a serviceable unit prior to next flight, except that flight may be conducted in accordance with the ferry flight provisions of FAR 91.52(e). Any repaired or replacement unit must comply with the provisions of FAR 91.52 (performance standards of TSO-C91), or be an equivalent unit approved by the Chief, Engineering and Manufacturing Branch, Great Lakes Region.
This amendment becomes effective September 13, 1974.