Results
2025-05-08: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model AS332L1 and EC225LP helicopters. This AD was prompted by a determination of a possible interference of the hoist operator's helmet cord with the toggle switch of the hoist cable cut control. This AD requires replacing, or modifying and re- identifying, certain hoist shear toggle switch supports, and prohibits installing certain hoist shear toggle switch supports, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2013-08-14: We are superseding an existing airworthiness directive (AD) for certain Revo, Incorporated Models COLONIAL C-1, COLONIAL C-2, LAKE LA-4, LAKE LA-4A, LAKE LA-4P, and LAKE LA-4-200 airplanes. That AD currently requires a one-time, dye-penetrant inspection of the horizontal stabilizer attachment fitting and repetitive visual inspections of the fitting for any evidence of fretting, cracking, or corrosion (with necessary replacement and modification); replacement of the fitting upon reaching the 850-hours time-in-service (TIS) safe life; and reporting to the FAA the results of the initial inspection and any cracks found on repetitive inspections. This new AD requires the same actions of AD 2005-12-02 except using revised service documents and procedures, adds Model COLONIAL C-1 airplanes to the Applicability, and adds an optional terminating action for the requirements. This AD was prompted by a report from Revo, Incorporated that, while the drawing numbers are different, the attachment fittings on the Model COLONIAL C-1 airplanes are identical in every other respect to those installed on the airplanes referenced in AD 2005-12- 02. We are issuing this AD to correct the unsafe condition on these products.
68-20-02: 68-20-02 AVIONS MARCEL DASSAULT: Amendment 39-659. Applies to Dassault Fan Jet Falcon Airplanes, Serial Numbers 1 thru 72. Compliance required not later than December 31, 1968. To prevent the ingress of moisture causing internal corrosion in the landing gear switch assembly, replace the existing microswitch with a modified switch, in accordance with Dassault AMD Service Bulletin No. 333, dated June 21, 1968, or later SGAC-approved issue, or FAA- approved equivalent, as follows: LOCATION Nose Landing Gear, EXISTING SWITCH P/N A1-23802 Telescopic Bar MODIFIED SWITCH P/N A1-23802 - V1 - V2 Nose Landing gear, EXISTING SWITCH P/N A1-23801 Door Actuating Cylinder MODIFIED SWITCH P/N A1-23801 - V1 - V2 Main Landing Gear, EXISTING SWITCH P/N A2-23802 Drag Strut Actuator Cylinder MODIFIED SWITCH P/N A2-23802 - V1 - V2 Main Landing Gear, EXISTING SWITCH P/N A2-23801 Door Actuating Cylinder MODIFIED SWITCH P/N A2-23801 - V1 - V2 This amendment becomes effective October 25, 1968.
96-15-01: This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 96-15-01, which was sent previously to all known U.S. owners and operators of Raytheon Aircraft Corporation (formerly Beech) Model 1900D airplanes. This AD requires immediately pulling and banding the circuit breakers leading to the windshield heat control on both the pilot and co-pilot sides, inserting a copy of the priority letter AD into the Limitations section of the Airplane Flight Manual (AFM), and fabricating and installing a placard instructing the pilot to avoid flight into known icing conditions. Reports of smoke and fire in the cockpit on two Beech Model 1900D airplanes caused by a high resistance short circuit condition in the heated windshield wiring prompted the action. The actions specified by this AD are intended to prevent smoke and fire around the forward edge of the glare shield in the cockpit, which could result in loss of control of the airplane. Comments for inclusion in the Rules Docket must be received on or before October 21, 1996.
2021-06-05: The FAA is superseding Airworthiness Directive (AD) 2017-07-08 for Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model MBB- BK 117 D-2 helicopters. AD 2017-07-08 required repetitively inspecting each engine mount elastomeric bushing (elastomeric bushing). Since the FAA issued AD 2017-07-08, Airbus Helicopters has designed an improved engine mount metal bushing (metal bushing). This new AD retains the inspection requirements of AD 2017-07-08 and requires replacing each affected engine mount bushing with an improved engine mount bushing, while also requiring repetitive inspections of the improved engine mount bushing. This AD also prohibits installing an elastomeric bushing on any helicopter. The actions of this AD are intended to address an unsafe condition on these products.
2000-07-03: This amendment adopts a new airworthiness directive (AD), applicable to Robinson Helicopter Company (Robinson) Model R44 helicopters, that requires inspecting the wire harness for contact with the fuel line assembly, removing and replacing the fuel line assembly if chafing has occurred, and installing spiral wrap tubing on the fuel line assembly. This amendment is prompted by four incidents of contact between the wire harness and the fuel line assembly. The actions specified by this AD are intended to prevent contact between the wire harness and the fuel line, which could result in chafing of the wire harness and a potential fire hazard.
2000-06-10: This amendment adopts a new airworthiness directive (AD) applicable to Bell Helicopter Textron Canada (BHTC) Model 407 helicopters. This action requires preflight checking and repetitively inspecting the tail boom for a crack and replacing the tail boom if a crack is found. This amendment is prompted by four reports of cracks on the tail boom in the area of the horizontal stabilizer. The actions specified in this AD are intended to prevent separation of the tail boom and subsequent loss of control of the helicopter.
2003-10-11: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 767-200 and -300 series airplanes, that currently requires repetitive inspections to find discrepancies of the barrel nuts that attach the vertical fin to body section 48, and follow-on actions. For certain airplanes, the existing AD requires replacement of certain bolts with new bolts. The existing AD also provides for optional terminating actions for the repetitive inspections. This amendment reduces the compliance time for the inspections; changes the torque specification; and mandates eventual replacement of all H-11 steel alloy barrel nuts and bolts with Inconel nuts and bolts, which ends the repetitive inspections. The actions specified by this AD are intended to find and fix corroded, cracked, or broken barrel nuts that attach the vertical fin to body section 48, which could result in reduced structural integrity of the vertical fin attachment joint, loss of the vertical fin, and consequent loss of controllability of the airplane. This action is intended to address the identified unsafe condition.
2018-06-06: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (CL-604 Variant) airplanes. This AD was prompted by reports of in-flight uncommanded rudder movements on airplanes with an installation similar to the installation on certain Model CL-600-2B16 (CL-604 Variant) airplanes. This AD requires modification of the wiring harness for the yaw damper control system. We are issuing this AD to address the unsafe condition on these products.
2013-08-01: We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD was prompted by reports of damaged fire seals on the forward edge of the thrust reverser. This AD requires inspecting to detect damage to the upper fire seals on the forward edge of the thrust reverser, where the fire seal contacts the 12-o'clock engine strut, and for correct stiffness and vent holes, and doing corrective actions if necessary; and installing a bracket for the fire seal. We are issuing this AD to detect and correct damage to the fire seals, which could allow airflow into the engine fire zone and could degrade the ability to extinguish an engine fire.