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Airworthiness Directives; Dowty Propellers Propellers

Unsafe Condition: Loss of the bonded metallic leading edge (L/E) guard of the propeller, which could result in damage to the propeller or to the airplane, or injury to personnel.

Why matched: Airworthiness Directives; Dowty Propellers Propellers

Airworthiness Directives; Dowty Propellers Propellers

Unsafe Condition: The loss of the bonded metallic leading edge (L/E) guard of the propeller, which could result in damage to the propeller or to the airplane, or injury to personnel.

Airworthiness Directives; Dowty Propellers Propellers

Unsafe Condition: In-flight double generator failure, which could result in reduced control of the airplane.

Airworthiness Directives; Dowty Propellers Type R212/4-30-4/22 and R251/4-30-4/49 Propeller Assemblies

Unsafe Condition: Reports of cracks in the propeller hub port buttress threads of R212 and R251 propellers, affecting hubs with over 6,000 flight hours. This could lead to propeller blade separation, potentially cau...

Why matched: Airworthiness Directives; Dowty Propellers Type R212/4-30-4/22 and R251/4-30-4/49 Propeller Assemblies

Airworthiness Directives; Dowty Propellers Type R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, and R334/4-82-F/13 Propeller Assemblies

Unsafe Condition: Propeller hub failure due to cracks in the hub, which could result in loss of control of the airplane.

Why matched: Airworthiness Directives; Dowty Propellers Type R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, and R334/4-82-F/13 Propeller Assemblies

Airworthiness Directives; Dowty Propellers Type R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, and R334/4-82-F/13 Propeller Assemblies

Unsafe Condition: Propeller hub failure due to cracks in the hub, which could result in loss of control of the airplane.

Airworthiness Directives; Dowty Propellers Models R354/4-123-F/13, R354/4-123-F/20, R375/4-123-F/21, R389/4-123-F/25, R389/4-123-F/26, and R390/4-123-F/27 Propellers

Unsafe Condition: A number of propeller blade outer sleeves have been found with cracks since 1996. Testing has shown that blade retention integrity is not affected by this cracking. However, this condition, if not ...

Why matched: Airworthiness Directives; Dowty Propellers Models R354/4-123-F/ 13, R354/4-123-F/20, R375/4-123-F/21, R389/4-123-F/25, R389/4-123-F/26, and R390/4-123-F/27 Propellers

Airworthiness Directives; Dowty Propellers R408 Series Propellers

Unsafe Condition: Three in-service propellers have been found to have blades which have lost the bonded metallic leading edge guard. If the leading edge guard comes off as the propeller turns, it could cause seconda...

Why matched: Airworthiness Directives; Dowty Propellers R408 Series Propellers

Airworthiness Directives; Dowty Propellers R321/4-82-F/8; R324/4-82-F/9; R333/4-82-F/12; and R334/4-82-F/13 Propellers

Unsafe Condition: One propeller blade has been identified where the blade counterweight capscrew holes have not been correctly drilled. If the capscrew holes are not machined to their required depth, the counterweig...

Why matched: Airworthiness Directives; Dowty Propellers R321/4-82-F/8; R324/4- 82-F/9; R333/4-82-F/12; and R334/4-82-F/13 Propellers

Airworthiness Directives; Dowty Propellers Type R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, and R334/4-82-F/13 Propeller Assemblies

Unsafe Condition: Propeller hub failure due to cracks in the hub, which could result in loss of control of the airplane.

Airworthiness Directives; Dowty Aerospace Propellers, Models R354, R375, R389, and R390 Propellers

Unsafe Condition: Fretting on the joint mating faces of propeller hubs could lead to failure of the hub due to loose hub through bolts.

Why matched: Airworthiness Directives; Dowty Aerospace Propellers, Models R354, R375, R389, and R390 Propellers

Airworthiness Directives; Dowty Aerospace Propellers Model R381/6-123-F/5 Propellers

Unsafe Condition: Propeller blade cracks and propagation could result in propeller blade separation and possible aircraft loss of control.

Why matched: Airworthiness Directives; Dowty Aerospace Propellers Model R381/6-123-F/5 Propellers

Dowty Rotol (now Dowty Aerospace Gloucester Ltd.) Models (c)R354/4-123-F/13, (c)R354/4-123-F/20, and (c)R375/4-123-F/21 Propellers

Unsafe Condition: Possible loss of the propeller due to low torque or cracks in propeller retention bolts or hubs.

Why matched: Dowty Rotol (now Dowty Aerospace Gloucester Ltd.) Models (c)R354/4-123-F/13, (c)R354/4-123-F/20, and (c)R375/4-123-F/21 Propellers

DOWTY ROTOL LTD Model R.209/4-40-4.5/2 Propellers

Unsafe Condition: Propeller hub failure due to cracks in the hub arm threads and subsequent loss of propeller blade retention.

Why matched: DOWTY ROTOL LTD Model R.209/4-40-4.5/2 Propellers

DOWTY ROTOL Models (c)R.209/4-40.5/2, (c)R.245/4-40.5/13, and (c)R.259/4-40-4.5/17 Propellers

Unsafe Condition: Loosening of the propeller blade groups due to separation of red line position markings by more than 0.100 inch or damaged lockpieces, set bolts, or shims affecting the locking mechanism of the bla...

Why matched: DOWTY ROTOL Models (c)R.209/4-40.5/2, (c)R.245/4-40.5/13, and (c)R.259/4-40-4.5/17 Propellers

DOWTY ROTOL LTD. Models R175/4-30-4/13E Propellers

Unsafe Condition: Propeller failure due to cracking of the propeller hub front wall to snout radius.

Why matched: DOWTY ROTOL LTD. Models R175/4-30-4/13E Propellers

DOWTY ROTOL Models (c)R.289/3-110-F/1 and (c)R.289/3-110-F/11 Propellers

Unsafe Condition: Cracks, scratches, pitting, nicks, dents, or gouges on the outer 15 inches of the leading edge of propeller blades, P/N 660705335, could lead to blade tip failures.

Why matched: DOWTY ROTOL Models (c)R.289/3-110-F/1 and (c)R.289/3-110-F/11 Propellers

DOWTY ROTOL, LTD. Propeller Types

Unsafe Condition: Cracks in the propeller pitch lock cylinder

Why matched: DOWTY ROTOL, LTD. Propeller Types