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Amdt-39-22733

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: could result in reduced structural capability and reduced controllability of the airplane.

Effective: Apr 18, 2024 Category: aircraft

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2023-13-07R1

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: Standard practices/structures

Effective: Apr 18, 2024 Category: aircraft Compliance: Effective April 18, 2024.

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2023-25-06

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: The possibility of inadvertently connecting the inboard harness to the outboard channel (and vice versa) of the wheel speed transducers in the main landing gear (MLG) wheel axles.

Effective: Feb 7, 2024 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Technical illustration of an aircraft landing gear and wheel assembly
Problem area Landing gear

2023-17-02

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: a margin to stall warning that is lower when ice speed is ON than with ice speed OFF, which could lead to inappropriate stall warnings during the landing phase and result in increased pilot workloa...

Effective: Oct 19, 2023 Category: aircraft Compliance: Within the compliance times specified, unless already done.

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2023-13-07

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: The affected airplanes must not be operated at a maximum take-off weight (MTOW) above 29,000 pounds. This condition, if not corrected, could allow flight in an uncertified envelope, leading to redu...

Effective: Jul 21, 2023 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2023-09-10 Recurring

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: Excessive wear on starter generator brushes part number (P/N) 23080-2017 installed in DC starter generator P/N 23080-031 MOD M, which could lead to starter generator failure(s), possibly resulting ...

Effective: May 31, 2023 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Technical illustration of an aircraft electrical generator and wiring assembly
Problem area Electrical system

2022-14-09

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: untreated torque arm center pins installed on any main landing gear (MLG), which, if not corrected, could lead to failure of the torque arm center pin and free swinging of the MLG, possibly resulti...

Effective: Aug 18, 2022 Category: aircraft Compliance: Within the compliance times specified, unless already done.

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Technical illustration of an aircraft landing gear and wheel assembly
Problem area Landing gear

2021-26-05

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: fatigue cracking of principal structural elements (PSEs) and corrosion prevention and control

Effective: Feb 15, 2022 Category: aircraft Compliance: Within 90 work-hours

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2021-23-07

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: The circuit breaker for the emergency cabin lighting tripped without fault in the system, leading to an insufficiently charged emergency battery, with consequent loss of cabin emergency lighting, p...

Effective: Jan 5, 2022 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Technical illustration of an aircraft electrical generator and wiring assembly
Problem area Electrical system

2021-09-11

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: abnormal behavior of the MLG hydraulic transfer valve due to a restriction in hydraulic flow, which could cause the MLG hydraulic transfer valve to not function properly and fail to retract, extend...

Effective: Jul 29, 2021 Category: aircraft Compliance: within the compliance times specified, unless already done

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2021-02-02

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: Inadvertently reversed connections of the outboard and inboard channel harnesses of the wheel speed transducers in the main landing gear (MLG) wheel axles, which could lead to wrong inputs to the a...

Effective: Mar 29, 2021 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Technical illustration of an aircraft landing gear and wheel assembly
Problem area Landing gear

2020-25-02

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: NLG door attachment bolts are susceptible to hydrogen embrittlement, decreasing the mechanical characteristics. This condition could lead to failure of the affected parts, which would impair the li...

Effective: Jan 21, 2021 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2020-21-02

final rule

Airworthiness Directives; Kidde Aerospace & Defense

Unsafe Condition: certain cargo fire extinguisher halon bottles installed in the cargo compartment had low charge pressure

Effective: Nov 19, 2020 Category: aircraft Compliance: Within 24 months

Why matched: Airworthiness Directives; Kidde Aerospace & Defense

2020-07-17

final rule

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

Unsafe Condition: fatigue cracking of principal structural elements (PSEs) and corrosion prevention and control

Effective: May 26, 2020 Category: aircraft Compliance: within 90 days after the effective date of this AD

Why matched: Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

2019-23-08

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: deteriorated capacity of the fuel probes, which could lead to incorrect fuel reading, possibly resulting in fuel starvation and uncommanded engine in-flight shutdown, and consequent reduced control...

Effective: Jan 7, 2020 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

2019-21-04

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: loose and irregular fasteners at the forward end of the nacelle upper longeron, where the bulkhead frame and struts are attached to the engine mounting structure (EMS), which could cause developmen...

Effective: Dec 11, 2019 Category: engine Compliance: Within 3,000 flight hours or 24 months, whichever occurs first after the effective date of this AD.

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

2019-19-04

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: cracks in the o-ring groove of magnetic fuel level indicators, which, if not detected and corrected, could result in a severe fuel leak and consequent risk of fuel starvation.

Effective: Oct 31, 2019 Category: aircraft Compliance: Within 3,000 flight hours or 24 months, whichever occurs first after the effective date of this AD.

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Technical illustration of an aircraft fuel pump, filter, valve, and lines
Problem area Fuel system

2019-10-02

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: The pitch trim switches did not disconnect the autopilot, resulting in loss of control of the airplane.

Effective: Aug 15, 2019 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

2019-03-19

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: Deteriorated capacity of the fuel probes, which could lead to incorrect fuel reading, possibly resulting in fuel starvation and uncommanded engine in-flight shutdown, and consequent reduced control...

Effective: Apr 2, 2019 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

2018-25-10 Recurring

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: A manufacturing defect on certain aileron bellcrank support brackets resulted in insufficient material thickness of the affected lug attaching the support bracket to the rear spar of the wing.

Effective: Jan 14, 2019 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Technical illustration of an aircraft flight control surface and actuator
Problem area Flight controls

2018-18-17 Recurring

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: ruptured horizontal stabilizer de-icing boots, which could lead to complete loss of the de-icing function within its associated zone and severe vibrations, possibly resulting in reduced control of ...

Effective: Oct 18, 2018 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

2018-11-07 Recurring

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: A manufacturing defect was identified on certain aileron bellcrank support brackets, installed on the outboard section of the left hand (LH) and right hand (RH) wing. The material thickness of the ...

Effective: Jun 13, 2018 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Technical illustration of an aircraft flight control surface and actuator
Problem area Flight controls

2017-22-09

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: Reports of natural stall events in icing conditions, without prior stall warnings.

Effective: Dec 11, 2017 Category: aircraft Compliance: Within 12 months after the effective date of this AD.

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

2017-21-05

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: Failure to accomplish the new inspection tasks for the drag brace support fitting of the main landing gear (MLG) and corrosion prevention and control program (CPCP) related tasks could result in re...

Effective: Nov 27, 2017 Category: aircraft Compliance: Within 50 flight hours after the effective date of this AD.

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Technical illustration of an aircraft landing gear and wheel assembly
Problem area Landing gear

2017-17-14

final rule

Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Unsafe Condition: Circuit breakers of unsuitable strength fail to protect the system from an overcurrent, leading to overheating of wires and possibly resulting in smoke or fire in the airplane.

Effective: Oct 2, 2017 Category: aircraft Compliance: Within 6 months after the effective date of this AD.

Why matched: Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

Technical illustration of an aircraft electrical generator and wiring assembly
Problem area Electrical system