AILERON - RUDDER INTERCONNECT REMOVAL
Piper PA-22 Colt · Type Certificate
Overview
This document provides instructions regarding the removal of the aileron-rudder interconnect system specifically for the Piper PA-22 series aircraft, focusing on the 150 and 160 horsepower models. It cites LPC Bulletin 1033 and outlines the requirements for disconnecting the interconnect system under STC SA45RM. The document emphasizes that only certain models and serial numbers are eligible for this modification and that others, including the PA-22-125 and PA-22-135, require separate FAA approval. The document serves as a technical reference for aircraft owners and maintenance personnel involved with the PA-22 series, ensuring compliance with FAA regulations and safety standards.
- Only PA-22 150 and 160 hp models can disconnect the rudder-aileron interconnect system under STC SA45RM.
- Models PA-22-125 and 135 require separate FAA approval for disconnection.
- Eligible serial numbers for modification are 22-3218, 22-3387 to 22-7642.
- Modification must comply with Piper drawing 14926.
- The PA-22-108 hp Colt does not use the interconnect system.
Document
Source
Originally published by www.univair.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Type Certificate
- Pages
- 1
- File size
- 7.2 KB
- Publisher
- www.univair.com
Most owners only have the POH. Here's the essential set for the Piper PA-22 Colt.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
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In this document
Eligibility for Modification
The document specifies that only the PA-22 150 and 160 hp models with fixed pitch propellers, licensed in the Normal category, may disconnect the rudder-aileron interconnect system. Other models, such as the PA-22-125 and PA-22-135, must obtain separate FAA approval.
Serial Number Restrictions
Eligible aircraft for the modification are limited to PA-22 150 and 160 hp models with serial numbers 22-3218 and 22-3387 to 22-7642. This is in accordance with the PA22 Type Certificate data sheet, item 407.
Modification Compliance
The removal of the rudder-aileron interconnect system must be performed in accordance with Piper drawing 14926. This ensures that the modification meets the required safety and regulatory standards.
Background Information
The document provides historical context, explaining that the PA-20 Pacer series did not use the interconnect system and that the PA-22-125 hp model faced certification challenges related to spin recovery. Subsequent models retained the interconnect system, except for the PA-22-108 Colt, which had conventional controls.
Safety notes
- Ensure compliance with FAA regulations when modifying the aircraft.
- Only eligible models and serial numbers should undergo the modification.
Full document text
AILERON - RUDDER INTERCONNECT REMOVAL APPLICABLE TO PA22 150 AND 160 HP AIRCRAFT The following is cited from LPC Bulletin 1033, the installation instructions for the PA-22 taildragger conversion, Page 4, Item 22, Paragraph 2 states: Note: Under the provisions of STC SA45RM, only the PA-22 150 and 160 hp models with fixed pitch propellers licensed in the Normal category may disconnect the rudder-aileron interconnect system. For all other PA-22 models (e.g. PA22-125 and 135 hp) that have the system disconnected, one must obtain separate FAA approval. The rudder-aileron interconnect system may also be removed from tri-cycle geared PA22s. Only the 150 and 160 hp models, serial numbers 22-3218, 22-3387 to 22-7642, are eligible per the PA22 Type Certificate data sheet, 1A6 item 407. These aircraft must have a fixed piASDKHFKSDFKJSDHFKJHtch propeller and be licensed in the Normal category. This modification has to done in accordance with Piper drawing 14926. The PA22-108 hp Colt, serial numbers 8000 and up, did not use the aileron-rudder interconnect system. Owners and operators of PA22-125 and 135 hp aircraft must obtain a separate FAA approval. Background: The PA20 Pacer series aircraft did not use a rudder-aileron interconnect system. When the basic design was changed into the tri-cycle geared PA22, flight testing found that the PA22-125 hp (first of the PA22 series) would not recover from a spin in the prescribed number of turns to meet certification requirements. All later PA22 series aircraft, the 135, 150 and 160 hp, retained the rudder-aileron interconnect system. The only exception was the PA22-108 Colt. It had conventional rudder and aileron cables.