Honeywell Phase 3 Display Units (DUs) have shown themselves susceptible to "blanking" during airline electro magnetic interference (EMI) certification testing of wireless broadband systems (Wi-Fi) on various Boeing 737NG airplanes, prompting Boeing to cease linefit installs of in-flight connectivity systems across its portfolio, including widebody aircraft.
Multiple sources tell ATI and Flightgloal that the blanking occurred during EMI testing for Aircell's Gogo in-flight Internet supplemental type certificate on 737NG aircraft. Aircell has declined comment, saying "this topic is not Aircell specific and, as such, we do not have any comment on the matter".
Boeing says it has deferred the activation of wireless systems that interface with passenger devices that could potentially interfere with the DU 3 displays. "Boeing has not delivered any installations that would have this issue. Honeywell has assured us that they are working to address the problem and we are satisfied that they are taking the necessary steps to do so," says Bret Jensen with BCA Engineering Communications.
Wednesday, March 16, 2011
Inflight Wi-Fi Causing Interference?
Boeing confirms Wi-Fi interference with Honeywell avionics: