Airworthiness Directive 2006-22-05
one-timeAirworthiness Directives; Various Aircraft Equipped With Honeywell Primus II RNZ-850( )/-851( ) Integrated Navigation Units
What this AD requires
The FAA is superseding an existing airworthiness directive (AD), which applies to various aircraft equipped with certain Honeywell Primus II RNZ-850( )/-851( ) integrated navigation units (INUs). That AD, as one alternative for compliance, provides for a one-time inspection to determine whether a certain modification has been installed on the Honeywell Primus II NV-850 navigation receiver module (NRM), which is part of the INU. In lieu of accomplishing this inspection, and for aircraft found to have an affected NRM, the existing AD provides for revising the aircraft flight manual to include new limitations for instrument landing system approaches. This new AD requires inspecting to determine whether certain modifications have been done on the NRM; and doing related investigative, corrective, and other specified actions, as applicable; as well as further modifications to address additional anomalies. This AD results from reports indicating that erroneous glideslope indications have occurred on certain aircraft equipped with the subject INUs. We are issuing this AD to ensure that the flightcrew has an accurate glideslope deviation indication. An erroneous glideslope deviation indication could lead to the aircraft making an approach off the glideslope, which could result in impact with an obstacle or terrain.
Which aircraft AD 2006-22-05 applies to
Applies to aircraft equipped with a Honeywell Primus II RNZ-850( )/-851( ) integrated navigation unit (INU) having a part number listed in Table 1, regardless of aircraft modification status. Installed on, but not limited to, BAE Systems Jetstream Model 4101; Bombardier BD-700-1A10 series and CL-215-6B11 (CL-415 variant) series; Cessna 560, 560XL, 650; Dassault Mystere-Falcon 50 series; AvCraft Dornier 328-100 and -300 series; EMBRAER EMB-135 and EMB-145 series; Learjet 45; Raytheon Hawker 800XP and 1000; Sikorsky S-76A, S-76B, S-76C.
Whether AD 2006-22-05 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.