by Tommy H. Thomason

Thursday, January 26, 2012

F9F-3 Panther

The only notable differences that I know of between the Grumman F9F-2 and -3 is that 1) the -2 was powered by a P&W J42 engine and the -3, an Allison J33 and 2) the -3 with the J33 engine was never modified to carry bombs or rockets as the -2 was. The -3 was delivered first, to VF-51 to replace their FJ-1s. The picture above was taken during carrier qualifications aboard Boxer. Only 54 F9F-3s were produced; most had the J42s substituted for the lower-thrust J33s and were redesignated as -2s. According to Baugher (, the changeover was accomplished in October 1949; however, that may have been when the first ones were converted because VF-51 and VF-52 were reportedly at sea with them in 1950 off Korea.

The earliest F9F-3s and -2s also appear to have a slightly different ejection seat headrest. See

I'm therefore not sure whether VF-51 deployed with -3s per se. It and sister squadron VF-52 were aboard Valley Forge in the western pacific in mid-1950, just in time to be in on the start of the Korean War. LT(jg) Leonard H. Plog of VF-51, reportedly flying a -3 (BuNo 123071, modex 109S), made the first carrier-based jet kill, a North Korean Yak-9., in July 1950

A picture of VF-51 F9F-3s, according to the caption, deployed aboard Valley Forge is provided below. Note the lack of "Navy" and "VF-51" on the side of the aft fuselage, the unusually large number on the nose, and the large "104S" under the left wing. The later markings would be smaller and in addition to "Navy"and the squadron identification on the fuselage, there would be "Navy" on the underside of the left wing. The erosion-resistant leading edge treatment (see on the leading edge of the wing, inlet, tip tank, and empennage is also clearly less wide on these F9F-3s:

Hobbyboss has  recently released a 1/72 kit of the F9F-3. I don't know if they have corrected the errors in their F9F-2 kit (see  Markings are provided for VF-51. However, VF-51 made a second Korean war deployment, only in -2s aboard Essex, and it appears that the markings in the kit are those of VF-51's F9F-2s, not its F9F-3s. In the photos I've seen so far like the ones above that are definitely VF-51 F9F-3s, neither "Navy" nor "VF-51" is marked on the aft fuselage. In a movie clip, I did note a red area at the top of the fin and on the nose, unlike the above. F9F-3 109S reportedly never got a kill marking, either, as shown in some illustrations.  (See

In any event, the stores pylons should not be used; the J33-powered F9F-3 were never modified to carry rockets as shown on the box art like the -2s were.


  1. Thanks for the advice on the Skyraider kit, I'm now tackling the Hobbyboss kit of the -3. I'd like some information as to how to complete accurately.

    You note that 'NAVY' and 'VF-51' on the fuselage would not be present in 1950. Also I note that 'NAVY' is not present under the port wing but instead a large 'S' is in it's place. Would it be safe to assume that I make those adjustments and finish the model of 109S similarly as depicted in the above photo in order to place it in 1950?

    Also, can you give me some details about the colours of the canopy structure. I've seen reports of it being either zinc chromate green and flat black.

    1. No Navy under the port wing would be correct for early 1950; the side and tail numbers would be there as on the upper starboard wing.

      The canopy frames were almost certainly black. However, the seat (except for the headrest was green and the armor plate probably green.

    2. Thanks for that info, can you tell me from time period onwards did the anti corrosion leading edges become extended on all Panther's? I still have a couple more to do from the 1951-53 time period.

    3. I can't say for sure when the leading edge change occurred, but it only appears to be on the very early F9Fs in 1949 and the -3s deployed in 1950. However, there is another difference: the "bump" on the side of the fuselage ahead of the inlet was not painted with corogard initially after the leading edge treatment was widened. I don't know when that transition occurred either.

    4. Thanks for this information, I'm on a steep learning curve about all this.