Philippine Mars Begins Water Trials

The Philippine Mars entered the waters of the Sproat Lake to begin testing in preparation for its ferry flight to Arizona.

The Philippine Mars entered the waters of Sproat Lake to begin testing in preparation for its ferry flight to Arizona. Photo by Rob Frolic
Aircorps Art Dec 2019


With the Hawaii Mars now settled at its new permanent home in the British Columbia Aviation Museum, the focus of historic aviation enthusiasts has shifted to the Philippine Mars. On April 25, 2024, the Pima Air and Space Museum (PASM) announced via Facebook that it had acquired the Philippine Mars. Since then, however, little additional information has been released. While some unverified details have circulated on social media, the general public has yet to receive substantial updates.

Philippine Mars Begins Water Trials 8479 Philippine Mars Starts Water Tests 7

On Monday, November 4, 2024, the iconic WWII seaplane finally entered the waters of Sproat Lake. The Coulson Aviation team has been diligently preparing the aircraft for its ferry flight. After several years docked, all systems, cabling, flight controls, and engines underwent thorough inspections. The team plans to conduct taxi tests, log at least six hours of flight time, and, with luck, find a break in the weather for the journey to Arizona.

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The Mars fleet, produced between 1942 and 1947, originally flew cargo missions between Hawaii and the Pacific Islands in support of the U.S. Navy during World War II. After the war, the aircraft were used for medical air transport and cargo lifts between Hawaii and California during the Korean War, before being decommissioned in 1956. Each of these impressive planes was given a proper name, perhaps as a nod to their nautical roots. The prototype was named The Old Lady, and the production planes were christened Hawaii Mars, Philippine Mars, Marianas Mars, Marshall Mars, Hawaii Mars II (after the original Hawaii Mars was destroyed), and Caroline Mars.

Martin JRM 3 Mars formation
Four Martin JRM-3 Mars flying boats in formation. In the foreground is Philippine Mars, Bu. No. 76820. The second airplane is Marianas Mars, Bu. No. 76821. (U.S. Navy)

In 1958, the surviving fleet of four aircraft was sold to a consortium of timber companies in British Columbia, Canada, and converted into the world’s largest water bombers, each capable of carrying 7,200 U.S. gallons per drop. Coulson purchased two of the aircraft, the Hawaii Mars and the Philippine Mars, in 2007, marking the beginning of the company’s fixed-wing air tanker operations for aerial wildfire support.

JRM 3 Philippine Mars takeoff Alameda
Philippine Mars back during her service days. (photo via Wikipedia)

We are excited to see that both remaining iconic Martin JRM Mars aircraft will be preserved! As soon as Vintage Aviation News has verified updates, we will share them here.

Moreno-Aguiari

Born in Milan, Italy, Moreno moved to the U.S. in 1999 to pursue a career as a commercial pilot. His aviation passion began early, inspired by his uncle, an F-104 Starfighter Crew Chief, and his father, a military traffic controller. Childhood adventures included camping outside military bases and watching planes at Aeroporto Linate. In 1999, he relocated to Atlanta, Georgia, to obtain his commercial pilot license, a move that became permanent. With 24 years in the U.S., he now flies full-time for a Part 91 business aviation company in Atlanta. He is actively involved with the Commemorative Air Force, the D-Day Squadron, and other aviation organizations. He enjoys life with his supportive wife and three wonderful children.

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About Moreno Aguiari 3374 Articles
Born in Milan, Italy, Moreno moved to the U.S. in 1999 to pursue a career as a commercial pilot. His aviation passion began early, inspired by his uncle, an F-104 Starfighter Crew Chief, and his father, a military traffic controller. Childhood adventures included camping outside military bases and watching planes at Aeroporto Linate. In 1999, he relocated to Atlanta, Georgia, to obtain his commercial pilot license, a move that became permanent. With 24 years in the U.S., he now flies full-time for a Part 91 business aviation company in Atlanta. He is actively involved with the Commemorative Air Force, the D-Day Squadron, and other aviation organizations. He enjoys life with his supportive wife and three wonderful children.

4 Comments

  1. Where will this aircraft land in Arizona? There are no lakes or reservoirs close to Tucson, where Pima Air Museum is located.

    • … before making its final flight to Lake Roosevelt in Arizona, the largest water body in Arizona and the nearest body of water capable of handling the arrival of the large air tanker before its delivery to the Pima Air and Space Museum near Tucson, Arizona. (from another website)

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