EASA SIB 2014-02: WITHDRAWN _ SEE FAA SAIB NM-14-21

What to do

Operators should modify affected Honeywell RTA-44D transceivers following Honeywell Service Bulletin No. 064-50000-23-4 instructions and ensure only MOD 22 incorporated units are installed when operating in Brussels or New York airspace. No explicit compliance deadline is stated, but timely action is recommended to minimize interference risks.

Summary

EASA Safety Information Bulletin SIB No. 2014-02 addresses frequency interference caused by spurious transmissions from Honeywell RTA-44D Very High Frequency (VHF) transceivers. The affected transceivers, identified by part numbers 064-50000-0202 and 064-50000-0505 without MOD 22 incorporated, are installed on Airbus A318, A319, A320, and A321 aircraft. This bulletin informs operators about the issue and provides recommendations to mitigate the interference.

What changed

This bulletin republishes the original information to correct the Honeywell Service Bulletin number and highlights the installation of MOD 22 as standard on units with serial number 16835 and above. It introduces the recommendation to modify pre-MOD 22 units according to Honeywell's service instructions to prevent spurious transmissions. No mandatory airworthiness directive action is currently required, but future mandatory measures cannot be excluded.

Why it matters

Spurious transmissions from affected Honeywell VHF transceivers have caused increased workload for air traffic controllers, particularly in Brussels and New York airspace. Aviation professionals need to be aware of this issue to maintain communication integrity and avoid operational disruptions. Compliance teams and maintenance organizations must monitor updates to ensure continued airworthiness and regulatory compliance.

What to do

Summary

What changed

Why it matters

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