# TCDS P25NE: MT-Propeller Entwicklung GmbH - Type: Type certificate data sheet - Status: Current - Holder: MT-Propeller Entwicklung GmbH - Revision: 4 - Revised: June 7, 2021 - Product: Propeller - Certification basis: Part 21, Part 35 - Data sheet PDF: https://openairdocs.org/files/sha256/6f/82/6f8252b75d4adce0c2e334373186a2f3b5467eb907ef7c49e8ba87fb1c36410b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/88FC8985D8488B6D862586ED00682BAD.0001 - Page: https://openairdocs.org/tcds/P25NE ## Models (1) As the data sheet lists them. - MTV-12-( ) ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text TCDS NUMBER: P25NE U.S. DEPARTMENT OF TRANSPORTATION REVISION: 4 FEDERAL AVIATION ADMINISTRATION MT-PROPELLER COMPANY TYPE CERTIFICATE DATA SHEET P-25NE MODEL: MTV-12-( ) DATE: June 07, 2021 Propellers of models described herein confirming with this data sheet (which is part of this Type Certificate No. P25NE) and other approved date on file with the Federal Aviation Administration, meet the minimum standards for use in certified aircraft in accordance with pertinent aircraft data sheets and applicable portions of the Federal Aviation Regulations provided they are installed, operated and maintained as prescribed by approved manufacturer’s manual and other approved instructions. TYPE CERTIFICATE HOLDER MT-Propeller Entwicklung GmbH Flugplatzstrasse 1 94348 Atting Germany TYPE Hydraulic constant speed with feathering and reversing feature (See Notes 3 & 4) ENGINE SHAFT See Note 1 of this TCDS HUB MATERIAL Aluminum alloy BLADE MATERIAL Laminated wood composite structure, epoxy-fiber glass cover, with leading edge and erosion protection, Composite Blades Aramid Fiber Reinforced Plastics (AFRP): -517, -556, Carbon Fiber Reinforced Plastics (CFRP): -617, -656 HUBS: See Note 1 of this TCDS NUMBER OF BLADES 3 (three) DESIGN SERIES MTV-12 -B, -C, -D BLADES HUB- See Notes TYPE 2 & 6 MTV-12 See Note 1 MAXIMUM CONTINUOUS HP(kW) RPM HP(kW) RPM NOMINAL DIAMETER Max Min inch (cm) inch (cm) BLADE TWIST *) Min Max APPROXI- MATE WEIGHT **), ***), ****) lbs. (kg) -17, -24, -30, -32, -36, -39, -40, -53, -54, -56, -57, -59, 225 (168) 2800 225 (168) 2800 75.6 192 60 152 5 50 44 (20) -86, -100, -101, -105, -113, -114, -115, -117, -118, -119, 300 (224) 2700 300 (224) 2700 80 203 60 152 5 50 44 (20) -130, -131, -301, -302, -517, -556, 271 (202) 2340 296 (221) 2340 83 210 60 152 5 50 44 (20) -617, -656 *) The limits of the blade twist are defined between .20 and 1.00 blade radius **) Propellers with the option „Feather“ are approx.11 lbs (5kg) heavier ***) Propellers with the option „Reverse“ are approx. 7 lbs (3kg) heavier ****) Propellers with optional Feather and Reverse are approx.. 18 lbs (8kg) heavier Page No. 1 2 3 4 Rev. No. 4 3 3 4 TCDS P25NE 2 of 4 CERTIFICATION BASIS: The U.S. certification basis determined under Section 21.29 of the FAR and Bilateral Airworthiness Agreement between the United States and the Federal Republic of Germany is FAR 35, effective February 1, 1965, Amendments 35-1 to 35-7, inclusive. European Aviation Safety Agency (EASA) type certificated this propeller under type certificate EASA P.013. The FAA validated this product under U.S. Type Certificate Number P25NE. Effective September 28, 2003, the European Aviation Safety Agency (EASA) began oversight of this product on behalf of the Federal Republic of Germany. TC (IMPORT) NO. P25NE TC APPLICATION DATE: August 17, 1990 TC ISSUED August 13, 1992, revised December 10, 1999, revised April 26, 2004 IMPORT REQUIREMENTS: To be considered eligible for installation on U.S. registered aircraft, each propeller to be exported to the United States shall be accompanied by a certificate of airworthiness for export or certifying statement endorsed by the exporting cognizant civil airworthiness authority which contains the following language: (1) This propeller conforms to its United States type design (Type Certificate Number P25NE) and is in a condition for safe operation. (2) This propeller has been subjected by the manufacturer to a final operational check and is in a proper state of airworthiness. Reference FAR Section 21.500 which provides for the airworthiness acceptance of aircraft engines or propellers manufactured outside the U.S. for which a U.S. type certificate has been issued. Additional guidance is contained in FAA Advisory Circular 21-23, Airworthiness Certification of Civil Aircraft, Engines, Propellers, and Related Products, Imported into the United States. NOTES NOTE 1: HUB MODEL DESIGNATION: MT V - 12 - ( ) - B - ( ) ( ) ( ) ( ) ( ) Small letter: modifications which do not affect interchangeability Capital letter: modifications which restrict or exclude interchangeability Reversing Method, M=System Mühlbauer R = Reversing, Blank no reverse possible F = Feathering possible Blank no feather possible C = Counterweights for oil pressure to decrease pitch Flange Type * Design configuration number Number of basic model Variable pitch propeller MT-Propeller Entwicklung GmbH * Flange B = AS-127-D, SAE No. 2 mod., 1/2“ mounting bolts C = AS-127-D, SAE No. 2 mod., 7/16” mounting bolts D = ARP 502 TCDS P25NE 3 of 4 NOTES CONTINUED NOTE 2: BLADE MODEL DESIGNATION: ( ) ( ) 183 - 59 ( ) Small letter: modifications which do not affect interchangeability of blade sets Capital letter: modifications which restrict or exclude interchangeability of blade sets Number of blade design, contains construction and aerodynamic data Propeller diameter in cm Sense of rotation (viewed in flight direction) Blank: right-hand tractor RD: right-hand pusher L: left-hand tractor LD: left-hand pusher Position of pitch change pin Blank: Position for pitch change forces to decrease pitch C: Position for pitch change forces to increase pitch CR: Position for reverse, (pitch change forces to increase pitch) CF: Position for feather (pitch change forces in direction to increase pitch) CFR: Position for feather and reverse (pitch change forces in direction to increase pitch) NOTE 3: Pitch Control: Pitch control is accomplished by a standard governor or by the MT-Propeller Hydraulic Propeller Governor Installation, P-480-( ) or P-9( )( )-( ) for the reversing option -R(M). Applicable standard governors are published in the FAA-approved list MT-Propeller Service Bulletin No. 14( ). The P-480-( ) or P-9( )( )-( ) is a single acting pump governor, but dual pressure system design enables the hydraulically variable pitch MT-propellers to operate with reverse capability. P-480-( ) or P-9( )( )-( ) governors also incorporate feathering capability. Time Between Overhauls (TBO) for P-480-( ) or P-9( )( )-( ) governor is published in the MT-Propeller Service Bulletin No.1( ). NOTE 4: (a) Feathering: . (b) Reversing: Model incorporates feathering and unfeathering features by means of counterweights and springs with governor operation. Model also incorporates reversing feature by P-480-( ) or P-9( )( )-( ) governors. NOTE 5: Right & left hand Models: A version of the approved model with opposite hand rotation is approved at the same rating and diameter limitations. NOTE 6: Interchangeability: Not applicable NOTE 7: Accessories: (a) Propeller Spinners: According to FAA-approved list published in MT-Propeller Service Bulletin No. 13 (b) Propeller Governors: According to FAA-approved list published in MT-Propeller Service Bulletin No. 14 (c) Deicing Systems: According to FAA-approved list published in MT-Propeller Service Bulletin No. 15 NOTE 8: Shank fairings: Not applicable NOTE 9: Special limits: Not applicable TCDS P25NE 4 of 4 NOTES CONTINUED NOTE 10: Special notes: NOTE 11: (a) Aircraft installations must be approved as part of the aircraft type certificate and demonstrate compliance with the applicable aircraft airworthiness requirements (b) All MTV-12 propellers are to be operated within the limits of MT-Propeller Operation and Installation Manual No. E-124 for non reversible propellers and No. E-504 for reversible propellers, and adhere to the TBO-limits shown in Service Bulletin No. 1( ), latest revision. (c) Propeller maintenance, or overhaul, and airworthiness limitations shall be accomplished in accordance with MT-Propeller Overhaul Manual No. E-220 for non reversible propellers and No. E-519 for reversible propellers, latest revision. (d) Blade maintenance, or overhaul, shall be accomplished in accordance with MT- Propeller Overhaul Manual for Composite Blades (also applicable to wooden blades) No. E-1290, latest revision. Service Information: Each of the documents listed below must state that it is approved by the European Aviation Safety Agency (EASA) or – for approvals made before September 28, 2003 – by the LBA. Any such documents are accepted by the FAA and are considered FAA approved. • Service bulletins, • Structural repair manuals, • Vendor manuals, • Aircraft flight manuals, and • Overhaul and maintenance manuals. -- END -- ``` ## ADs (1, in force first) - [AD 2022-18-02](https://openairdocs.org/ad/2022-18-02): Propeller System · MT-Propeller Entwicklung MTV-5-1-( ), MTV-9-( ), MTV-12-( ) and 6 more. Effective Sep 16, 2022 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.