Interval: Every 12 calendar months OR after 500 flight hours, whichever occurs first.
| Item | Action | Acceptable Criteria | | :--- | :--- | :--- | | External case | Visual inspection | No cracks, dents >2mm, or pitting. Label legible. | | Antenna coax | Continuity check | <1.5 ohms center pin to center pin. | | Bracket shear bolts | Torque check | 45 in-lbs (5.08 Nm). No corrosion. | | ELT remote switch (cockpit) | Functional test | LED flashes once per 5 seconds. | | Battery expiry | Check date | Replace if >4 years from mfg date or if >1 hour of use. | Air Precision Elt 96 Maintenance Manual
The manual mandates a three-level test:
Connect a wattmeter and dummy load. Activate the ELT in test mode (as per manual: set mode switch to "TEST" for <5 seconds). Output should be within 70-100% of rated power. Interval: Every 12 calendar months OR after 500
| Tool Name | Part Number | Equivalent | | :--- | :--- | :--- | | 406 MHz Coupler | AP-CPL-406 | Teseq CDN 406-S1 | | G-Switch Test Jig | AP-TJ96 | Custom fabricated | | Shear bolt torque driver | AP-TORQ-45 | Snap-on ATX45 | | Battery disposal container | AP-HZ-BAT | NEMA 4X plastic | The manual mandates a three-level test :