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2011-18-07

final rule

Airworthiness Directives; WYTWORNIA SPRZETU KOMUNIKACYJNEGO (WSK) “PZL-RZESZOW”-SPOLKA AKCYJNA (SA) PZL-10W Turboshaft Engines

Unsafe Condition: Excessive wear on spline teeth of the fuel metering pump shaft.

Effective: Oct 17, 2011 Category: aircraft Compliance: Within 50 flight hours after the effective date.

Why matched: Airworthiness Directives; WYTWORNIA SPRZETU KOMUNIKACYJNEGO (WSK) "PZL-RZESZOW''--SPOLKA AKCYJNA (SA) PZL--10W Turboshaft Engines

2009-04-01

final rule

Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego “PZL-Rzeszow” S.A. PZL-10W Turboshaft Engines

Unsafe Condition: The ALRP-5 fuel metering pump units released to service between May 2006 and April 2007 can be vulnerable for seizing, demonstrated by occurrence of aluminum and bronze chips at the filter. This co...

Effective: Mar 24, 2009 Category: aircraft Compliance: Within 50 flight hours after the effective date of this AD.

Why matched: Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego "PZL-Rzeszow'' S.A. PZL-10W Turboshaft Engines

2003-18-04

final rule

Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W Turboshaft Engines

Unsafe Condition: Loose or improperly crimped engine-to-gearbox pin joint retaining nuts and damaged bolts found during overhaul, which could result in loss of nut torque and loosening of retaining nuts, leading to ...

Effective: Sep 23, 2003 Category: engine Compliance: Before further flight after the effective date of this AD, unless the actions have already been d...

Why matched: Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W Turboshaft Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2003-05-01

final rule

Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-Rzeszow S.A. Franklin 6A-350-C1, -C1A, -C1L, -C1R -C2, -C2A, and 4A-235 Series Reciprocating Engines

Unsafe Condition: Failures of the valves and diaphragms in certain diaphragm type AC4886 fuel pumps, AC part number 5656774, PZL part number 26.11.1710, leading to reduction or loss of engine power or external fuel ...

Effective: Mar 21, 2003 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-Rzeszow S.A. Franklin 6A-350-C1, -C1A, -C1L, -C1R -C2, -C2A, and 4A-235 Series Reciprocating Engines

96-02-04

final rule

Airworthiness Directives; Franklin Model 6A4-150-B3 and 6A4-165-B3 Reciprocating Engines

Unsafe Condition: Detonation due to low octane can result in severe engine damage and subsequent failure, including damaged intake valves, burned pistons, and excessive loads from detonation.

Effective: Feb 13, 1996 Category: engine Compliance: within the next 2 hours time in service (TIS) after the effective date of this airworthiness dire...

Why matched: Airworthiness Directives; Franklin Model 6A4-150-B3 and 6A4-165-B3 Reciprocating Engines

94-02-06

final rule

Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego "PZL-RZESZOW" PZL-3S Second Series Engines

Unsafe Condition: Separation of the propeller and loss of the aircraft due to cracked or broken propeller-flange attachment bolts, and distress in the rear crankshaft, rear counterweight, or rear counterweight pins.

Effective: Feb 28, 1994 Category: engine Compliance: prior to further flight

Why matched: Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego "PZL-RZESZOW" PZL-3S Second Series Engines

90-20-03

final rule

Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego Pzl-Mielec Models M18 and M18A Series Airplanes

Unsafe Condition: Failure of the aileron control system due to cracks and deformation in the aileron hinges.

Effective: Oct 17, 1990 Category: aircraft Compliance: Within the next 50 hours time-in-service after October 17, 1990, and thereafter at intervals of 5...

Why matched: Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego Pzl-Mielec Models M18 and M18A Series Airplanes

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

90-17-15

final rule

Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego Pzl-Mielec Model M18 Series Airplanes

Unsafe Condition: Failure of the vertical fin and rib in the area of the upper rudder attachment.

Effective: Sep 17, 1990 Category: aircraft Compliance: Within the next 50 hours time-in-service after the effective date of this AD, unless already acco...

Why matched: Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego Pzl-Mielec Model M18 Series Airplanes

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

89-04-02

final rule

Airworthiness Directives; FACET AEROSPACE PRODUCTS, CO (MARVEL SCHEBLER): Applicability: Facet Models MA-4-5, MA-5, and MA-6AA Carburetors

Unsafe Condition: Jamming of the carburetor throttle due to incorrect air metering stop pin installation.

Effective: Mar 8, 1989 Category: appliance Compliance: within the next 200 hours time in service, or when the carburetor is removed from the engine, whi...

Why matched: Airworthiness Directives; FACET AEROSPACE PRODUCTS, CO (MARVEL SCHEBLER): Applicability: Facet Models MA-4-5, MA-5, and MA-6AA Carburetors

86-10-12

final rule

WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines

Unsafe Condition: Separation of the propeller from the aircraft due to distress in the rear crankshaft, rear counterweight, or rear counterweight pins, including wear, galling, pitting, scoring, and discoloration (b...

Effective: Mar 2, 1988 Category: engine Compliance: Within 25 hours after the effective date of this AD for engines with 275 hours or more since new,...

Why matched: WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines

83-21-01

final rule

WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engine

Unsafe Condition: In-flight propeller loss due to operation of PZL-3S engine with Dowty Rotol CR 289/3-110-F/1, F/11, or F/12 propellers.

Effective: Oct 26, 1983 Category: engine Compliance: prior to further operation

Why matched: WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engine

Technical illustration of an aircraft propeller assembly
Problem area Propeller

69-24-03

final rule

Airworthiness Directives; MARVEL-SCHEBLER: Applies to Marvel Schebler Models MA-3-A, MA-3-PA, MA-3-SPA, MA-4-SPA, MA-4-5, MA-5, MA-4-5-AA, MA-6AA, and HA-6 Carburetors

Unsafe Condition: Blockage of carburetor metering passages by thread lubricant or other foreign material may cause possible power losses.

Effective: Nov 29, 1969 Category: appliance Compliance: within the next 25 hours' time in service after the effective date of this AD

Why matched: Airworthiness Directives; MARVEL-SCHEBLER: Applies to Marvel Schebler Models MA-3-A, MA-3-PA, MA-3-SPA, MA-4-SPA, MA-4-5, MA-5, MA-4-5-AA, MA-6AA, and HA-6 Carburetors

63-22-03

final rule

Airworthiness Directives; MARVEL-SCHEBLER: Applies to All MA4-5 Carburetors Not Having the One-Piece Combination Primary and Main Venturi

Unsafe Condition: The primary venturi may become loose resulting in wear of the primary venturi support legs on the ends contacting the carburetor body and at the retaining clip area. As a result, the retaining clip...

Effective: Dec 2, 1963 Category: appliance Compliance: at next carburetor removal or overhaul of either the carburetor or engine whichever occurs first ...

Why matched: Airworthiness Directives; MARVEL-SCHEBLER: Applies to All MA4-5 Carburetors Not Having the One-Piece Combination Primary and Main Venturi

48-50-01

final rule

FRANKLIN Model 6A4-150-B3 and B31 Engines

Unsafe Condition: Cylinder base flange failure due to cracks just above the base flange on early type cylinders with a flat section extending 3/8 inch to 7/8 inch from the outer edge.

Category: engine Compliance: after each 25 hours of operation

Why matched: FRANKLIN Model 6A4-150-B3 and B31 Engines

51-15-02

final rule

FRANKLIN Model 6A4-165-B3 Engines

Unsafe Condition: Cracks in the crankcase webbing near the main journal area and at the main bearing stud hole, which could lead to crankcase fracture and engine failure.

Category: engine Compliance: by July 15, 1951. Effective on and after this date, inspections required for engines with 500 hou...

Why matched: FRANKLIN Model 6A4-165-B3 Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

48-21-01

final rule

Airworthiness Directives; Bellanca: Applies to All Aircraft Equipped With Franklin Model 6A4-150- B3 and B31 Engines.

Unsafe Condition: Binding of accelerator pump linkage in Marvel-Schebler MA-3-SPA carburetor due to worn parts.

Category: engine Compliance: after each 25 hours of operation

Why matched: Airworthiness Directives; Bellanca: Applies to All Aircraft Equipped With Franklin Model 6A4-150- B3 and B31 Engines.

51-28-02

final rule

FRANKLIN Model 6V4-178 and 6V4- 200 Series Engines

Unsafe Condition: Oil pump gears (P/N 10673 and 17736) may experience excessive galling leading to failure.

Category: engine Compliance: Compliance required as indicated.

Why matched: FRANKLIN Model 6V4-178 and 6V4- 200 Series Engines

69-09-01

final rule

Airworthiness Directives; Eisemann: Applies to all type AM-4, AM-6, LA-4, and LA-6 Eisemann Magnetos

Unsafe Condition: Electrically shorted windings in the magneto coil could cause loss of engine power in flight.

Category: appliance Compliance: within the next 50 hours' time in service after the effective date of this AD, unless already acc...

Why matched: Airworthiness Directives; Eisemann: Applies to all type AM-4, AM-6, LA-4, and LA-6 Eisemann Magnetos