Airworthiness Directive · Amendment 39-9195 · Textron Aviation Inc. Airplanes
Textron Aviation Inc. Airplanes
This AD applies to Textron Aviation Inc. BAe.125 Series 800A, BH.125 Series 400A, BH.125 Series 600A, DH.125 Series 1A, DH.125 Series 1A-522, DH.125 Series 1A/R-522, DH.125 Series 1A/S-522, DH.125 Series 3A, DH.125 Series 3A/R, DH.125 Series 3A/RA, DH.125 Series 400A, Hawker 800, HS.125 Series 1B, HS.125 Series 1B-522, HS.125 Series 1B/R-522, HS.125 Series 1B/S-522, HS.125 Series 3B, HS.125 Series 3B/R, HS.125 Series 3B/RA, HS.125 Series 3B/RB, HS.125 Series 3B/RC, HS.125 Series 400B, HS.125 Series 400B/1, HS.125 Series 401B, HS.125 Series 403A(C), HS.125 Series 403B, HS.125 Series 600A, HS.125 Series 600B, HS.125 Series 600B/1, HS.125 Series 600B/2, HS.125 Series 600B/3, HS.125 Series 700A.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Corporate Jets Models DH/BH/HS/BAe 125-1A to -700A series, BAe 125-800A, and Hawker 800 series airplanes, that requires replacement of the existing standby static inverter with an inverter that incorporates a circuit board assembly sealed with a conformal coating. This amendment is prompted by reports of failure of the standby static inverter caused by electrical shorting from moisture condensing on the printed circuit boards (PCB), due to aberrations in the PCB conformal coating. The actions specified by this AD are intended to prevent malfunction of the standby static inverter due to exposure to moisture caused by inadequate insulation coating of the circuit board assembly. Malfunction or failure of the standby static inverter, when its use is necessary, could result in the loss of electric power for certain equipment critical to safety of flight.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
