N6797 - 1953 Vertol H21B Aircraft Registration

H21

1953 VERTOL H21B

Aircraft Description

N6797 is a 1953 Vertol H21B, a single-engine reciprocating (piston) aircraft registered to Museum of Flight Foundation in Seattle, WA. The registration certificate was issued on April 27, 2011. The registration is set to expire on April 30, 2027. The aircraft is configured with 21 seats. The aircraft's Mode S transponder code is A90074 (hex), used for ADS-B identification and flight tracking. The FAA registry record for N6797 was last updated on January 22, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Piasecki H-21 Workhorse was the world's first practical heavy-lift tandem-rotor helicopter, pioneering the distinctive twin-rotor configuration that would influence military transport rotorcraft for decades. First flown on April 11, 1952, it featured a unique tandem rotor layout with two 44-foot counter-rotating rotors powered by a single Wright R-1820 radial engine. The aircraft could transport 20 fully equipped troops or carry 12 stretchers for medical evacuation, with a maximum gross weight of 14,700 pounds. Originally manufactured by Piasecki Helicopter Corporation, which later became Vertol Aircraft Corporation. AviatorDB tracks 5 Vertol aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is H21.

AviatorDB has found no NTSB accident or incident reports involving N6797. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.

Model Year
1953
Manufacturer
VERTOL
Model
H21B
Type Aircraft
Rotorcraft
ICAO Type Code
H21CH-21 Work horse
Cruise Speed
76 mph
Weight Class
12,500–19,999 lbs
Airworthiness Date
Classification
Type Registration
Corporation
Status
Valid Registration
Cert Issue Date
April 27, 2011

Registered Owner

Name
MUSEUM OF FLIGHT FOUNDATION
Address
9404 E MARGINAL WAY S
City
SEATTLE
State / Zip Code
Washington98108-4046
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
1
Mode S Code (Oct)
52200164
Mode S Code (Hex)
A90074

Additional Details

Registration
N6797
Serial Number
53-4366
Number of Engines
1
Number of Seats
21
Expiration Date
April 30, 2027
Last Action Date
January 22, 2023
Last Update Date
January 19, 2026
Unique ID
00773506

Data Source

Data provided by the US Federal Aviation Administration. View on FAA.gov

Last updated: 2026-05-15 01:32:20 UTC