Sky Enterprises, Inc. Airworthiness Directives

24 ADs indexed for Sky Enterprises, Inc. aircraft.

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47-21-22

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Loosening of engine mounting bolts due to absence or improper installation of tab type lockwashers.

Category: aircraft Compliance: before next flight

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

53-23-03

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Severe corrosion of the right and left upper and lower lift strut fittings, fuselage wing lift strut fittings and wing lift strut fittings has been reported. Corrosion may be intergranular in natur...

Category: aircraft Compliance: within the next 25 hours of operation but not later than December 1, 1953, and thereafter at each...

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

49-31-02

final rule

Airworthiness Directives; Republic Model RC-3 Airplanes

Unsafe Condition: Engine failures resulting from fuel starvation due to incorrect procedures of checking the fuel tank capacity.

Category: aircraft Compliance: not later than October 1, 1949

Why matched: Airworthiness Directives; Republic Model RC-3 Airplanes

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

47-21-19

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Split metal sleeve opening can permit casing to slide out when control is actuated, rendering the control ineffective.

Category: aircraft Compliance: Not later than the next 25 hours of operation subsequent to July 1, 1947, but in no case later th...

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

47-51-08

final rule

Airworthiness Directives; Republic Model RC-3 Airplanes

Unsafe Condition: The steerable tailwheel control cable may foul on the tailwheel quadrant arms.

Category: aircraft Compliance: not later than the next 25-hour inspection

Why matched: Airworthiness Directives; Republic Model RC-3 Airplanes

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

49-03-01

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Failure of the diaphragms in the AC fuel pumps on Franklin Model 6A8-215-B8F and -B9F engines, which could allow fuel to enter the engine compartment.

Category: aircraft Compliance: December 1, 1949

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

48-01-03

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Excessive play in the elevator trim tab due to wear in the clevis pin hole of the horn, which could reduce control effectiveness.

Category: aircraft Compliance: By February 1, 1948, and at each 25-hour inspection until bushing is installed.

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

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

47-21-13

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Rivets at the forward end of the elevator control push-pull tube may be loose or improperly sized, leading to control surface malfunction.

Category: aircraft Compliance: prior to July 1, 1947

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

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

47-21-23

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Loosening of engine cooling fan capscrews and tab locks could lead to fan and pulley sheave detachment, resulting in engine cooling system failure.

Category: aircraft Compliance: before the next flight and after 5 hours of operation following each installation of fan

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

47-47-13

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: The Hartzell propeller hub counterweight length and position may not be correctly designated, leading to potential improper operation or failure of the reverse thrust system.

Category: aircraft Compliance: not later than next 100-hour inspection or January 15, 1948

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

Technical illustration of an aircraft propeller assembly
Problem area Propeller

47-21-15

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: The radio filter's condenser may be insufficiently secured, leading to a short circuit risk due to improper installation or inadequate fastening methods.

Category: aircraft Compliance: as soon as possible, but not later than July 1, 1947

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

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

47-21-16

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: The existing drain cock or plug on the fuel strainer may not be leakproof and airtight, leading to potential fuel leakage or loss of fuel system integrity.

Category: aircraft Compliance: Not later than the next 25 hours of operation subsequent to July 1, 1947, and in any case not lat...

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

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

47-21-17

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: The existing backfire screen on the flexible hot air tube may fail to prevent backfires, leading to potential interference with the carburetor air duct or the old screen.

Category: aircraft Compliance: not later than the next 25 hours of operation subsequent to July 1, 1947, and in any case not lat...

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

47-47-10

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Float strut failures during rough water landings

Category: aircraft Compliance: prior to February 1, 1948

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

48-11-04

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: The hydraulic pump handle attachment is insecure due to the use of self-locking nuts that may not provide adequate security.

Category: aircraft Compliance: April 15, 1948

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

47-21-14

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Fouling of the lower elevator cable on the elevator balance weight in the tail boom

Category: aircraft Compliance: At the next 25-hour inspection or by August 1, 1947, whichever occurs first.

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

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

47-47-12

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Excessive drop-off in engine r.p.m. when carburetor heat is used.

Category: aircraft Compliance: not later than December 31, 1947

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

47-47-14

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: The oil screen assembly may be cracked, causing appreciable horizontal movement when subjected to direct side pressure, which could lead to oil pressure drop.

Category: aircraft Compliance: at each 25-hour inspection

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

47-47-11

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Inadvertent reversal of propeller if propeller reverse control wire fails at control valve attachment

Category: aircraft Compliance: January 15, 1948

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

47-21-21

final rule

Airworthiness Directives; Republic Model RC-3 Aircraft

Unsafe Condition: Cracks in the slots at the upper end of each tip float strut (P/N 17W23001) could lead to strut failure.

Category: aircraft Compliance: Immediately

Why matched: Airworthiness Directives; Republic Model RC-3 Aircraft

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