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2021-26-09 Recurring

final rule

Airworthiness Directives; Brantly Helicopters Industries U.S.A. Co., Ltd., and Brantly International, Inc., Helicopters

Unsafe Condition: cracking of the tail rotor (T/R) hub, which could result in loss of T/R control and subsequent loss of control of the helicopter.

Effective: Jan 19, 2022 Category: aircraft Compliance: Within 100 hours time-in-service (TIS) or at the next annual inspection after the effective date ...

Why matched: Airworthiness Directives; Brantly Helicopters Industries U.S.A. Co., Ltd., and Brantly International, Inc., Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2014-20-16

final rule

Airworthiness Directives; Brantly International, Inc. Helicopters

Unsafe Condition: Cracks or delamination in main rotor blades, particularly near the trailing edge, can lead to blade separation and loss of control.

Effective: Nov 12, 2014 Category: aircraft Compliance: Within 8 hours time-in-service for P/N 248-101 and P/N 248-202 blades; within 10 years or 1,000 h...

Why matched: Airworthiness Directives; Brantly International, Inc. Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2006-08-07

final rule

Airworthiness Directives; Brantly International, Inc. Model B-2, B-2A, and B-2B Helicopters

Unsafe Condition: Fatigue cracking of the vertical shaft, potentially caused by misalignment, leading to shaft failure and subsequent loss of control of the helicopter.

Effective: May 2, 2006 Category: aircraft Compliance: Within 10 hours time-in-service (TIS) and before further flight after any hard landing or main/ta...

Why matched: Airworthiness Directives; Brantly International, Inc. Model B-2, B-2A, and B-2B Helicopters

68-04-04 R2

final rule

Airworthiness Directives; BRANTLY Models B-2, B-2A, and B-2B Helicopters

Unsafe Condition: Failures of the tail rotor blade at the spar retention areas due to pitting corrosion and cracks detected through visual and dye penetrant inspections.

Effective: Feb 14, 1983 Category: aircraft Compliance: Prior to further flight for initial compliance, and thereafter at intervals not exceeding 100 or ...

Why matched: Airworthiness Directives; BRANTLY Models B-2, B-2A, and B-2B Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

81-17-01

final rule

Airworthiness Directives; BENDIX: Applies to Bendix Starting Vibrator Assemblies, Part Numbers 10-176485-121, -122, -241, -242; 10-382780-12, -24

Unsafe Condition: Loss of ignition due to grounding of both 'P' (Primary) leads within the starting vibrator.

Effective: Aug 13, 1981 Category: appliance Compliance: within the next 25 hours time in service after the effective date of this AD

Why matched: Airworthiness Directives; BENDIX: Applies to Bendix Starting Vibrator Assemblies, Part Numbers 10-176485-121, -122, -241, -242; 10-382780-12, -24

76-08-06

final rule

Airworthiness Directives; Brantly Model 305 Helicopters.

Unsafe Condition: Failure of the main rotor hub clevis bearing or torsion strap assemblies P/N C0976-1, D2225-1, or ESJ 74837/36NBC2048YZP due to deterioration, roughness, or metallic particles in the grease residue...

Effective: May 25, 1976 Category: aircraft Compliance: Prior to further flight after January 18, 1968, and thereafter at intervals not to exceed 50 hour...

Why matched: Airworthiness Directives; Brantly Model 305 Helicopters.

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

72-21-02

final rule

Airworthiness Directives; BRANTLY Models B-2, B-2A and B-2B Helicopters

Unsafe Condition: Fatigue failure of the pylon outboard bearing shaft, Part Number 280-5 or 280-6.

Effective: Dec 8, 1972 Category: aircraft Compliance: Within the next 10 hours time in service after the effective date of this AD, or upon the accumul...

Why matched: Airworthiness Directives; BRANTLY Models B-2, B-2A and B-2B Helicopters

71-17-05

final rule

Airworthiness Directives; BRANTLY ROTORCRAFT Models B-2, B-2A, and B-2B Rotorcraft

Unsafe Condition: Corrosion on the inner bore surface of the main rotor mast P/N 104-1 could impair structural integrity.

Effective: Nov 26, 1971 Category: aircraft Compliance: within the next 10 hours time in service after the effective date of this airworthiness directive...

Why matched: Airworthiness Directives; BRANTLY ROTORCRAFT Models B-2, B-2A, and B-2B Rotorcraft

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

68-05-02

final rule

Airworthiness Directives; BRANTLY Models B-2, B-2A and B-2B Series, and 305 Helicopters

Unsafe Condition: Failure of the tail rotor drive shaft due to corrosion.

Effective: Mar 30, 1968 Category: aircraft Compliance: Within 10 hours' time in service after receipt of this Airworthiness Directive

Why matched: Airworthiness Directives; BRANTLY Models B-2, B-2A and B-2B Series, and 305 Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

67-09-02

final rule

Airworthiness Directives; BRANTLY Models B-2, B-2A, and B-2B Helicopters

Unsafe Condition: The Fafnir P/N 212K bearing installed on the upper main rotor mast may have insufficient service life and reliability.

Effective: Apr 20, 1967 Category: aircraft Compliance: within the next 100 hours' time in service after the effective date of this AD

Why matched: Airworthiness Directives; BRANTLY Models B-2, B-2A, and B-2B Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

65-28-01

final rule

Airworthiness Directives; BRANTLY Model B-2 Series Helicopters

Unsafe Condition: Failure of the tail rotor blade grip at the outboard thrust bearing shoulder due to tool marks deeper than 0.010 inch or relief radius less than 0.020 inch.

Effective: Dec 14, 1965 Category: aircraft Compliance: Before the accumulation of 125 hours' time in service (for blades with <100 hours at AD effective...

Why matched: Airworthiness Directives; BRANTLY Model B-2 Series Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

62-06-01

final rule

Airworthiness Directives; BRANTLY Model B-2 Helicopters

Unsafe Condition: Sudden movement of the seat backs to the full aft adjustment position due to the seat back adjustment wire P/N B2-334-32.

Effective: Mar 23, 1962 Category: aircraft Compliance: within the next 10 hours' time in service after the effective date of this AD

Why matched: Airworthiness Directives; BRANTLY Model B-2 Helicopters

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

62-05-02

final rule

Airworthiness Directives; BRANTLY All Model B-2 Helicopters

Unsafe Condition: Failure of the seals in the engine driven fuel pump due to excessively high temperature conditions in the engine compartment.

Effective: Feb 28, 1962 Category: aircraft Compliance: within the next 25 hours' time in service after the effective date of this directive

Why matched: Airworthiness Directives; BRANTLY All Model B-2 Helicopters

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

61-23-01

final rule

Airworthiness Directives; BRANTLY All Model B-2 Helicopters

Unsafe Condition: Bond separation between the skin and foam filler on the inboard end of the B2-248-53 and B2-248-53A main rotor blades and cracks around the root fitting in both upper and lower skins.

Effective: Nov 4, 1961 Category: aircraft Compliance: Within the next 10 hours' time in service unless already accomplished within the last 15 hours' t...

Why matched: Airworthiness Directives; BRANTLY All Model B-2 Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

61-18-02

final rule

Airworthiness Directives; BRANTLY All Model B-2 Helicopters

Unsafe Condition: Limited tail rotor control due to insufficient directional control over a wider main rotor r.p.m. range.

Effective: Aug 29, 1961 Category: aircraft Compliance: within the next 25 hours' time in service after effective date of this directive unless already a...

Why matched: Airworthiness Directives; BRANTLY All Model B-2 Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

61-16-04

final rule

Airworthiness Directives; BRANTLY Model B-2 Helicopters

Unsafe Condition: Failures of the right forward mount lug of the upper transmission case have occurred due to fatigue associated with undesirable pre-stress introduced during assembly procedures.

Effective: Aug 14, 1961 Category: aircraft Compliance: within the next 25 hours' time in service after the effective date of this directive

Why matched: Airworthiness Directives; BRANTLY Model B-2 Helicopters

61-11-02

final rule

Airworthiness Directives; All BRANTLY Model B-2 Helicopters

Unsafe Condition: Severe oil leaks from failure of the welded seam of the mixture heater oil jacket (Lycoming P/N 72396) on Lycoming VO-360 engines introduce a fire hazard and engine failure risk from oil starvation.

Effective: Aug 4, 1961 Category: aircraft Compliance: within the next 25 hours' time in service after effective date of this directive

Why matched: Airworthiness Directives; All BRANTLY Model B-2 Helicopters

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

61-16-03

final rule

Airworthiness Directives; BRANTLY All B-2 Helicopters

Unsafe Condition: Improper seat installation allows the seat to slide forward of its normal position, causing interference with the collective control leading to restriction.

Effective: Aug 4, 1961 Category: aircraft Compliance: within the next 25 hours' time in service after the effective date of this AD

Why matched: Airworthiness Directives; BRANTLY All B-2 Helicopters

61-11-01

final rule

Airworthiness Directives; All Brantly B-2 Helicopters

Unsafe Condition: Failure in the skid landing gear drag brace rod end bearing (Kahr Bearing Co. P/N HE-3SFN) occurred during ground handling resulting in collapse of the landing gear through the area of the lubricat...

Effective: May 31, 1961 Category: aircraft Compliance: within the next 10 hours' time in service after effective date of this directive

Why matched: Airworthiness Directives; All Brantly B-2 Helicopters

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

61-04-01

final rule

Airworthiness Directives; BRANTLY Models B-2 Helicopters

Unsafe Condition: Centrifugal clutch failure to release at engine shutdown can shear AN 4-10A bolts transmitting torque between the B2-8-14 clutch disc assembly, fabric coupling, and free-wheeling clutch housing lugs.

Effective: Feb 22, 1961 Category: aircraft Compliance: within the next 10 hours of flight time after the effective date of this directive

Why matched: Airworthiness Directives; BRANTLY Models B-2 Helicopters

60-26-03

final rule

Airworthiness Directives; Brantly Model B-2 Helicopters

Unsafe Condition: Misalignment of the tail rotor drive shaft installation and insufficient flexibility in the drive shaft coupling system could result in coupling failure and loss of tail rotor drive.

Effective: Dec 20, 1960 Category: aircraft Compliance: within 25 hours' time in service after the effective date of this directive

Why matched: Airworthiness Directives; Brantly Model B-2 Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

60-10-02

final rule

Airworthiness Directives; BRANTLY Model B-2 Helicopters

Unsafe Condition: Cracks in the upper and lower skin near rivet heads on the inboard one-third of the outboard main rotor blades (248-40 and 248-46) could exceed safe limits, leading to blade failure.

Category: aircraft Compliance: Compliance required as indicated. Inspection must be performed prior to flight subsequent to each...

Why matched: Airworthiness Directives; BRANTLY Model B-2 Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

60-06-03

final rule

Airworthiness Directives; Brantly B-2 Helicopters

Unsafe Condition: A fatigue crack has been found around the forward end of the weld joining the tail rotor guard to the sheet metal bracket at the upper tail rotor gear box, which could lead to tail rotor loss due t...

Category: aircraft Compliance: within the next 10 hours' time in service and at each 10 hours' time in service thereafter

Why matched: Airworthiness Directives; Brantly B-2 Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

60-07-02

final rule

Airworthiness Directives; BRANTLY Model B-2 Helicopters

Unsafe Condition: Failures of the tail rotor drive shaft through the cooling fan drive pulley bolt hole have occurred, resulting in loss of directional control.

Category: aircraft Compliance: prior to next flight

Why matched: Airworthiness Directives; BRANTLY Model B-2 Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system