docdodj01 Posted February 20, 2019 Share Posted February 20, 2019 Hello there, Can anyone shed more details on Capt Fiebelkorn’s P-51D? I see that it has a fillet on the tail, but looking at the serial on the tail, 44-11161, it is, to my perception, an early mustang. I noted that most of the early P-51D-5 had the serial 44-13XXX, but I can’t remember the exact detail on when switched to the D-10 series. Could it be possible that his mustang was an early version with a field mod tail? Thanks in advance! Link to comment Share on other sites More sharing options...
TAG Posted February 20, 2019 Share Posted February 20, 2019 Red Fiebelkorn's pony was a D-5-NT, part of order NA-111 and built at the North American Dallas plant, as per the -NT designation. His plane obviously received a dorsal fin field mod at some point in August '44, when the conversion kit finally became available for 8th AF fighter units (despite the fact that Technical Order #01-60J-18 requiring the addition of the fillet had been issued since 8 April 1944). I read somewhere that the freighter carrying the first conversion kits was sunk by a U-boat whilst crossing the Atlantic, which may explain the delay in getting the fillets installed on Mustangs already in combat operations. The kits actually also included a reverse rudder boost tab, which added resistance to the pedals according to the rudder throw to help pilots from inadvertently overcontrolling and ripping off the tail planes in a snap roll (which were verboten in Mustangs). The D-10-NA series, the first to include dorsal fins & reverse rudder trim tabs at the North American Inglewood, CA factory line, starts at serial number 44-14053. The equivalent variant manufactured at the Dallas plant was known as the P-51K-10-NT (due to the use of an uncuffed Aeroproducts propeller, as opposed to the cuffed Hamilton Standard-equipped D series) and the first serial number to roll out with factory installed dorsal fin/trim tab was 44-11953. There's lots more info here on all things Mustang, and you can also find some scans of the original wartime T.O.'s re: dorsal fins here (post #9). Hope that helped! CANicoll, docdodj01, D.B. Andrus and 2 others 1 4 Link to comment Share on other sites More sharing options...
D Bellis Posted February 20, 2019 Share Posted February 20, 2019 8 hours ago, docdodj said: Can anyone shed more details on Capt Fiebelkorn’s P-51D? I see that it has a fillet on the tail, but looking at the serial on the tail, 44-11161, it is, to my perception, an early mustang. Serial 44-11161 falls into the first batch of 200 P-51D-5s built at the Dallas plant. Production blocks by serial number can be found here: http://www.mustangsmustangs.com/p-51/production Keep in mind that ALL surviving P-51D-5s in service were eventually fitted with the dorsal fillet mod, and the last 200 or so were modified at depot level prior to delivery. HTH, D Link to comment Share on other sites More sharing options...
MikeMaben Posted February 21, 2019 Share Posted February 21, 2019 15 hours ago, docdodj said: Could it be possible that his mustang was an early version with a field mod tail? Thanks in advance! Yep ... http://www.americanairmuseum.com/aircraft/21006 Link to comment Share on other sites More sharing options...
docdodj01 Posted February 21, 2019 Author Share Posted February 21, 2019 15 hours ago, TAG said: Red Fiebelkorn's pony was a D-5-NT, part of order NA-111 and built at the North American Dallas plant, as per the -NT designation. His plane obviously received a dorsal fin field mod at some point in August '44, when the conversion kit finally became available for 8th AF fighter units (despite the fact that Technical Order #01-60J-18 requiring the addition of the fillet had been issued since 8 April 1944). I read somewhere that the freighter carrying the first conversion kits was sunk by a U-boat whilst crossing the Atlantic, which may explain the delay in getting the fillets installed on Mustangs already in combat operations. The kits actually also included a reverse rudder boost tab, which added resistance to the pedals according to the rudder throw to help pilots from inadvertently overcontrolling and ripping off the tail planes in a snap roll (which were verboten in Mustangs). The D-10-NA series, the first to include dorsal fins & reverse rudder trim tabs at the North American Inglewood, CA factory line, starts at serial number 44-14053. The equivalent variant manufactured at the Dallas plant was known as the P-51K-10-NT (due to the use of an uncuffed Aeroproducts propeller, as opposed to the cuffed Hamilton Standard-equipped D series) and the first serial number to roll out with factory installed dorsal fin/trim tab was 44-11953. There's lots more info here on all things Mustang, and you can also find some scans of the original wartime T.O.'s re: dorsal fins here (post #9). Hope that helped! Thanks! This means I can build the Revell kit using June Nite decals with or without a AM fillet tail Link to comment Share on other sites More sharing options...
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