US safety regulators have ordered the inspection of Honeywell emergency locator transmitters as a precautionary measure following the Ethiopian Airlines Boeing 787-8 fire at London Heathrow.
The US FAA directive matches a Transport Canada advisory, which took effect on 26 August, ordering a one-time inspection of Honeywell transmitters, following discovery of battery wiring installation discrepancies which might lead to an electrical short-circuit.
Around 4,000 US-registered aircraft will be affected by the FAA directive, which has the same 14 January deadline. The FAA estimates the total cost of implementation at around $325,000.
UK-led investigations into the 12 July fire, which badly damaged the Ethiopian aircraft on stand, have yet to reach firm conclusions into the reasons for the event.