Skip to main content

Supplemental Type Certificate for Piper PA-30, PA-39 (Twin Comanche)

Piper PA-30 Twin Comanche · Supplemental Type Certificate

Free account — keep the POHs & checklists you reference in one place.

Overview

This document serves as a Supplemental Type Certificate (STC) for the Piper PA-30 and PA-39 aircraft, commonly known as the Twin Comanche. It details the certification of a new propeller system designed to enhance the performance and operational characteristics of these aircraft models. The STC includes specifications for the propellers, installation instructions, and supplementary documentation necessary for compliance with aviation regulations. It is intended for aircraft owners, maintenance personnel, and operators seeking to upgrade their Twin Comanche with new propeller technology. The document outlines the benefits of the new propeller system, including improved performance metrics and operational efficiency.

  • The document is a Supplemental Type Certificate for the Piper PA-30 and PA-39 (Twin Comanche).
  • The STC includes two 3-blade constant speed propellers and composite spinners.
  • Propeller specifications include a maximum diameter of 180 cm (70.9 in) and a weight of 25.9 kg (57.1 lbs).
  • Take-off performance is enhanced by approximately 15% under standard conditions.
  • Single-engine climb performance is improved by about 10% under maximum takeoff weight.

Document

Source

Originally published by www.mt-propellerusa.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

Report a problem or request removal

Document details

Type
Supplemental Type Certificate
Year
2023
Pages
1
File size
91 KB
Publisher
www.mt-propellerusa.com
How rare is it?
15Piper PA-30 Twin Comanche registered worldwide · 0 active

Common. Rarer than 5% of the aircraft models we track.

Documentation completeness
5/7

Most owners only have the POH. Here's the essential set for the Piper PA-30 Twin Comanche.

More Piper PA-30 Twin Comanchemanuals & documents

See all 27
Similar aircraft

If you fly the Piper PA-30 Twin Comanche, you may also be researching these.

In this document

STC Kit Contents

The STC kit includes two 3-blade full feathering, counter-weighted, hydraulically actuated constant speed propellers (MTV-12-C-C-F/CF(L)180-57), two full composite spinners (AFRP) P-507-4, and several documentation pieces including an Airplane Flight Manual Supplement, Installation Instruction, and an Operation and Installation Manual.

Propeller Specifications

The propeller designated MTV-12-C-C-F/CF(L)180-57 features a milled single-piece aluminum hub and blades made from lightweight natural composite material. The propeller has a maximum diameter of 180 cm (70.9 in) and a minimum diameter of 175 cm (68.9 in). The total weight of one propeller and spinner is 25.9 kg (57.1 lbs).

Performance Enhancements

The new propeller system offers significant performance enhancements, including a 15% improvement in take-off performance, a 10% increase in single-engine climb performance, and a cruise speed enhancement of 2 to 3 knots under maximum takeoff weight (MTOW) and standard atmospheric conditions.

Full document text

MT-Propeller Entwicklung GmbH Flugplatzstr. 1 94348 Atting / Germany Phone: +49 (0) 9429 9409 0 Fax: +49 (0) 9429 8432 sales@mt-propeller.com MT-Propeller USA, Inc. 1180 Airport Terminal Drive DeLand, Florida 32724 Phone: (386) 736-7762 Fax: (386) 736-7696 info@mt-propellerusa.com Certification # EASA.21J.020, DE.21G.0008 www.mt-propeller.com Certified FAA Repair Station No. Q4MR908Y Flyer No.: FL-072 January 11, 2023 Type of Aircraft: Piper PA-30, PA-39 (Twin Comanche) EASA STC #: 10047589 FAA STC #: SA03563NY Aircraft TCDS # FAA: A1EA Propeller TCDS # EASA: FAA: P.013 P25NE Applicable Aircraft: Piper PA-30 & PA-39 (Twin Comanche) Engine: Lycoming (L)(I)O-320-( ) and other TC/STC approved piston engines STC Kit Contents Two 3-Blade Full Feathering, Counter-Weighted, Hydraulically Actuated Constant Speed Propellers MTV-12-C-C-F/CF(L)180-57 Two Full Composite Spinner (AFRP) P-507-4 One Airplane Flight Manual Supplement Doc. No. E-2349 One Installation Instruction Doc. No. E-2350 One Instruction for Continued Airworthiness Doc. No. E-2351 One Operation and Installation Manual ATA 61-06-24 (E-124) Option: Installation of Goodrich Electric Propeller De-Ice Boots according to SA04587CH from TALCO Aviation Corporation, Aurora, IL / USA. Propeller Specification Full Propeller Designation MTV-12-C-C-F/CF(L)180-57 Propeller Hub MTV-12-C-C-F Milled single-piece aluminum hub Blade CF(L)180-57 Blade Design Light-weight natural composite One Propeller, Spinner Weight & Fluid De-Ice 25,9 kg (57,1 lbs) Maximum Diameter Minimum Diameter 180 cm (70.9) 175 cm (68,9) TBO According to SB 1 ( ) latest issue Replaces 2-Blade Hartzell Propeller Advantages ➢ Best vibration damping characteristics for almost vibration free propeller operations ➢ Bonded on stainless steel leading edge for best erosion protection of the blades ➢ Enhanced take-off performance by approx. 15 % (MTOW, SL, ISA conditions) ➢ Enhanced single engine climb performance by approx. 10 % (MTOW, SL, ISA conditions) ➢ Enhanced cruise performance by 2 to 3 kts (MTOW, ISA) ➢ Unlimited blade life; FOD repairable blades ➢ Significant inside and outside noise reductions