Airworthiness directives › 2021-11-14
AD 2021-11-14 Airworthiness Directives; Leonardo S.p.a. Helicopters
Models named: AW169. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Leonardo S.p.a. Model AW169 helicopters, certificated in any category, identified in paragraphs (c)(1) and (2) of this AD. (1) Helicopters having serial number 69007, 69009, 69011, 69013, 69014, 69015, 69017, 69018, 69020, 69021, 69022, 69023, 69024, 69025, 69027, 69028, 69031, 69032, 69041, 69042, 69043, 69044, 69049 and 69051. (2) All helicopters equipped with retractable landing gear (LG) system part number (P/N) 6F3200F00311 or P/N 6F3200F00411.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 200 hours time-in-service (TIS) after the effective date of this AD, do the applicable actions specified in paragraphs (g)(1) through (5) of this AD, in accordance with the applicable part of the Accomplishment Instructions of Leonardo Helicopters Alert Service Bulletin 169-023, Revision B, dated April 16, 2018 (ASB 169-023, Revision B), except as required by paragraph (k) of this AD. (1) For helicopters having S/N 69011 and S/N 69017 that are not equipped with retractable LG system P/N 6F3200F00411 (enhanced NLG retracting actuator P/N 6F3230V00532 and enhanced MLG retracting actuators P/N 6F3230V00832 and P/N 6F3230V01032): Modify the helicopter (which includes replacing the actuators and doing checks and measurements), as specified in Part I of ASB 169-023, Revision B. (2) For helicopters having S/N 69007, S/N 69015, S/N 69018, and S/N 69022 that are not equipped with retractable LG system P/N 6F3200F00411 (enhanced NLG retracting actuator P/N 6F3230V00532 and enhanced MLG retracting actuators P/N 6F3230V00832 and P/N 6F3230V01032): Modify the helicopter (which includes installing enhanced landing gear retracting actuators and doing checks and measurements), as specified in Part II of ASB 169-023, Revision B. (3) For helicopters having S/N 69032, S/N 69041, and S/N 69051 that are not equipped with retractable LG system P/N 6F3200F00411 (enhanced NLG retracting actuator P/N 6F3230V00532 and enhanced MLG retracting actuators P/N F3230V00832 and P/N 6F3230V01032): Modify the helicopter (which includes installing enhanced landing gear retracting actuators and doing checks and measurements), as specified in Part III of ASB 169-023, Revision B. (4) For helicopters having S/N 69007, S/N 69009, S/N 69011, S/N 69013, S/N 69014, S/N 69015, S/N 69017, S/N 69018, S/N 69020, S/N 69021, S/N 69022, S/N 69023, S/N 69024, S/N 69027, S/N 69032, S/N 69041, and S/N 69051: Modify the helicopter (which includes modifying the landing gear actuator control box), as specified in Part IV of ASB 169-023, Revision B. (5) For helicopters having S/N 69007, S/N 69009, S/N 69011, S/N 69013, S/N 69014, S/N 69015, S/N 69017, S/N 69018, S/N 69020, S/N 69021, S/N 69022, S/N 69023, S/N 69024, S/N 69025, S/N 69027, S/N 69028, S/N 69031, S/N 69032, S/N 69041, S/N 69042, S/N 69043, S/N 69044, and S/N 69051: Modify the helicopter (which includes improving the landing gear proximity switch and doing checks and measurements), as specified in Part V of ASB 169-023, Revision B.
Unsafe condition
This AD was prompted by reports of failed nose landing gear (NLG) retraction actuators during the acceptance test procedures on the ground on the final assembly line. The FAA is issuing this AD to address failed NLG and main landing gear (MLG) retraction actuators. The unsafe condition, if not addressed, could result in a partially locked or unlocked NLG or MLG upon landing, possibly resulting in damage to the helicopter and injury to the occupants.
Affected ADs
None.
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