The Boeing 737 Classic refers to the -300/-400/-500 series of the Boeing 737. Fireliner Version.

Boeing 737-300 Fireliner

RoleNarrow-body jet airliner and Business jet
National originUnited States
ManufacturerBoeing Commercial Airplanes
First flightFebruary 24, 1984
IntroductionNovember 28, 1984 with USAir
StatusIn service
Primary usersUTair
Southwest Airlines (historical)
US Airways (historical)
Number built1,988
Developed fromBoeing 737
Developed intoBoeing 737 Next Generation

Coulson Aircraft

Boeing Aircraft

Boeing 247 – Boeing 307 Stratoliner Boeing 377 Stratocruiser 
Boeing 707 Narrow-body – Boeing 717 
Boeing 727 Narrow-body – Boeing 737 Max – Boeing 747 Jumbojet
Boeing 747-8 Jumbojet – Boeing 757 Narrow-body – Boeing 767  Narrow-body – 
Boeing 777 Triple Seven – Boeing 787 Dreamliner

Coulson Aircraft

Boeing 737-300 Fireliner

See more iin Coulson Airtankers

Boeing 737-300 Fireliner


The air tanker is a multi-use aircraft with the ability to carry passengers. Coulson said, “With a full retardant load and 4.5 hours of fuel we are so far under max gross weight we are going to leave the full interior and galleys in even when just in airtanker mode.”


Conversion of the first aircraft (N617SW) began in 2017, it was then repainted at Spokane in May 2017. The gravity-based tanks of the retardant system were complete in December 2017. The first conversion was done by Coulson Aircrane Canada. The second aircraft, Tanker 138, arrived April 2018 at the Port Alberni Facility and was converted with the RADS XXL tanking system for aerial firefighting.



Operational history

On 13 July 2018 air tanker T-137 made its first drops while flying out of San Bernardino, California. Britt Coulson said, “The 4,000 USG RADS-XXL/2 performed perfectly as did the airplane. Our flight crew couldn’t have been happier with the handling characteristics and our split tank worked as designed with no CG shift during the drop.” Next week they will finish flight testing with the FAA, and will soon begin static tests of the tank system. They are working with the Forest Service to schedule the grid test. Mr. Coulson expects Tanker 137 will be ready to fight fire in August.


In 2019 the Australian NSW Rural Fire Service has leased a Fireliner, known as ‘Gaia’ for around $2.5 million a year. The type is known as “Large Air Tanker” in Australia. The aircraft is also named “Marie Bashir” as a tribute to the first female governor

The first conversion has started, with a freshly painted 737 scheduled to roll out of the paint shop in Spokane on May 22, 2017. The next step is to add the gravity-based tanks which will have the same technology used on their C-130’s.

You are definitely intrigued to discover

Boeing 737-300 Fireliner "2017"

Coulson Aviation is adding not only additional air tankers to their fleet, but is branching out into a different model of aircraft. The company has purchased six 737-300’s and intends to convert them into 4,000-gallon “Fireliner” air tankers. Britt Coulson said they saw an opportunity when Southwest Airlines made a decision to replace their 737-300’s with the new 737-Max. Since the FAA only allows Southwest pilots to fly two of the 737’s with the same rating, the airline opted to sell the 737-300’s even though they have a relatively low number of hours in the sky


Crew: 2
Passengers: 124
Exterior Height: 36 ft 10 in
Wing Span: 93 ft 0 in
Length: 94 ft 0 in
External Baggage: 966 cu ft
Cabin Width: 11 ft 7 In

Geschwindigkeit 982 km/h 530 kts   610 mph

Mmo (max. Mach) Mach 0.92

Dienstgipfelhöhe 13.747 m 45.100 ft

Reichweite 13.449 km 7.262 NM

8.357 mi.

Aircrafttoaal encyclopedia

The Boeing 737 Classic refers to the -300/-400/-500 series of the Boeing 737. Fireliner Version.