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BLR Announces Whisper Prop Supplement Type Certificate for Beech 1900 C/D Owners

Beechcraft 1900D · Other Documents

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Overview

This document is a press release announcing the Supplemental Type Certificate (STC) for the Whisper Prop, a new propeller designed for the Beechcraft 1900C and 1900D aircraft. The STC is being issued by BLR Aerospace in collaboration with MT Propeller, and it highlights the benefits of the Whisper Prop, which features a modern 5-blade design that is quieter and more efficient than traditional propellers. The document includes testimonials from operators who have experienced improved performance and reduced maintenance costs with the new propeller. It serves as an informative piece for current and prospective owners of the Beechcraft 1900C and 1900D, detailing the advantages of upgrading to the Whisper Prop.

  • The Whisper Prop is a 5-bladed propeller designed for Beechcraft 1900C and 1900D aircraft.
  • It features a blade diameter that is 7% smaller than traditional Hartzell blades.
  • The propeller reduces vibration by more than 50%, enhancing flight comfort.
  • In-field repairs can be performed without removing the blades, reducing maintenance downtime.
  • The nickel cobalt leading edge provides superior erosion and damage resistance.

Document

Source

Originally published by absoluteaviation.co.za. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type
Other Documents
Pages
2
File size
1.4 MB
Publisher
absoluteaviation.co.za
How rare is it?
246Beechcraft 1900D registered worldwide · 154 active

Common. Rarer than 1% of the aircraft models we track.

Documentation completeness
4/7

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In this document

Whisper Prop Features

The Whisper Prop is a 5-bladed propeller with a smaller diameter compared to traditional options, specifically 7% smaller than the Hartzell blade. It is made from a natural composite core wrapped in carbon and fiberglass skins, which enhances durability and reduces vibration by over 50%. The propeller's leading edge is coated with nickel cobalt, providing superior erosion resistance.

Maintenance and Repair Benefits

The design of the Whisper Prop allows for in-field repairs without the need for blade removal, which is a significant advantage over traditional composite propellers. This feature reduces maintenance costs and improves aircraft availability, as operators can perform most repairs on-site.

Operator Testimonial

Michael Dancy, a 1900D owner, reported a noticeable reduction in cabin noise and vibration after installing the Whisper Prop. He emphasized the propeller's impact on comfort and dispatch reliability, stating that the shorter blade diameter leads to fewer occurrences of Foreign Object Damage (FOD).

Full document text

PRESS RELEASE BLR Announces Whisper Prop Supplement Type Certificate for Beech 1900 C/D Owners BLR has added MT Propeller’s newly EASA and Transport Canada certified Beech 1900 C/D Propeller to its expanding propeller product line. The company is currently executing testing for the U.S. FAA STC which is expected to be issued by the end of year. The Beech 1900 C/D Whisper Prop is manufactured by MT Propeller, the world’s most innovative aircraft propeller company. The Whisper Prop’s 5 bladed modern design features the smallest diameter, quietest and the most advanced composite propeller on the market. They are constructed with a natural composite core that is covered with carbon and fiberglass skins. The Whisper Prop blade diameter is 7% smaller than the Hartzell blade and each blade is finished with a nickel cobalt leading edge, three times harder than aluminum, providing unsurpassed erosion and damage resistance. The composite core in the Whisper Prop decreases vibration by more than 50% allowing for a significantly quieter and smoother flight. Unlike its counterpart made from aluminum or as a foam core composite, the Whisper Props natural composite core wrapped in carbon skins guarantees unlimited blade life and in-service filed repairs. The 7% reduction in blade length allows operators to experience fewer Foreign Object Damage (FOD) occurrences reducing aircraft downtime. Most repairs can be performed infield without blade removal as is required for traditional composite propellers, providing operators with reduced maintenance cost and improved aircraft availability. And with the Whisper Prop there are no ground RPM limitations. 1900 C/D owner Michael Dancy, CEO of Alpine in Provo, Utah is the first North American Operator to install the BLR Whisper Prop on his 1900D aircraft, the company announced today. “We are proud to be able to provide 1900 C/D aircraft owners like Michael with a better performing and more cost-effective propeller. We congratulate Michael and MT-Propeller on this truly exciting milestone,” said BLR President Mike Carpenter. “The Whisper Props have been a game changer to me in comfort and confidence,” Dancy said. “We have noticed a significant reduction in cabin noise and vibration, making the flights much more comfortable. Our operating schedule does not allow for aircraft down time, the reduction in blade damage due to the shorter diameter along with the nickel leading edge, and easy in-service field repairs will give us the improved dispatch reliability we need. I have confidence that my investment in these new propellers will provide a positive return for our operations.” Dancy continued by noting the 5 bladed modern design of propellers are just plain “cool”. BLR will exhibit their Whisper Prop for their King Air series during NBAA Oct. 22-24, booth C11430 in Las Vegas. BLR is encouraging customers to contact BLR to request performance information and pricing by visiting our booth, calling BLR at 425 405 4776 or by visiting BLRAerospace.com. About BLR Aerospace BLR Aerospace is fully devoted to performance innovation. With performance-enhancing products now on more than 10,000 helicopter and airplanes worldwide, and endorsements by industry leading OEMs such as Airbus Helicopters, Textron Aviation and Bell Helicopter we offer superior designs that offer our customers un-paralleled value.

Type certificate, explained

What's in the Beechcraft 1900D TCDS

A Type Certificate Data Sheet (TCDS) is the FAA's record of what an aircraft type was approved as. It is the source of truth for weights, seating, fuel and the rules the design was certified against. Expand any line to see what it means.

TCDS A24CERev 69· Issued 1999
Read the full TCDS

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