F-104G 20+50 Jagdbombergeschwader 31 (JaboG 31) in summer 1982 with the specific snake badge of 78 TFS from Woodbridge AB, UK

F-104G, construction number 683-2058, company model 683-10-19, built by Lockheed
manufactured by Group USA (ARGE-USA); Lockheed assembly in Fighterbomber version according contract lot 6
Lockheed test flights with register number coded "158" only; acceptance date April 26, 1962 coded KF+133 by BABwLockheed in Silver-finish colors
airlifted to Manching May 8, 1962 with 32 flight hours in a Canadair CL-44D airfreighter of "Flying Tiger Line"; Messerschmitt test flight on June 13, 1962
DA+254 JaboG 31 delivery date on July 24, 1962 at Norvenich AB; project "19" upgrading in order to get all Norvenich aircraft to the same modification level starting in January 1963
recoded DA+234 in April 1963 after the upgrading; aircraft was modified to such an extent that it received a new tactical code
camouflage scheme "Norm 62" according tech order "TA-196" in December 1964
20+50 SABCA for IRAN on June 20, 1968 with 777 flight hours, back to JaboG 31 on September 12, 1968
emergency landing at Leeuwarden AB, Netherlands on February 8, 1979; JaboG 34 on April 25, 1983 (transfer on paper)
to TechnGrp 11 Erding on May 2, 1983 (from Norvenich for depot work); transferred to JaboG 34 at Memmingen AB on July 29, 1983
"F-104 Kommando" TechnGrp 11 at Erding AB on July 23, 1984; withdrawn from use at LwSchleuse 11 on February 28, 1985; struck off charge order (AVA) December 18, 1984
MAP (Military Assistance Program) to Turkish Air Force (TuAF serial number 62-2058) on May 7, 1985 with 3.569 flight hours; not coded and for spare parts only
withdrawn from use April 19, 1989; scrapped September 13, 1989 at Eskisehir AB (1.Air Supply and Maintenance Center); at Ankara dump in October 1997 last noted.

copyright © W.Zetsche collection

Project "19"
After completion of the "Replace" project, LAAO (Lockheed Advisory Office) personnel in Nörvenich inspected all Lockheed aircrafts to determine the modification status. 
It turned out that there was still no uniform configuration "2056D" achieved. According to the latest Lockheed construction documents, which apparently only the LAAO submitted, 
up to 60 SB's (Service Bulletins) were missing on the individual aircraft. There is an LAAO report from 14.10.1962.
It was therefore decided that the affected 19 F-104G should be retrofitted again by staff of Heinkel from Speyer at Nörvenich. With the instruction of the BWB FS 173/51315 of 30.10.1962 this action was initiated. 
But for the reasons already mentioned, this work could not begin until January 1963.
The following aircrafts were re-modified again: factory numbers: 2043, 2044, 2046 - 2049, 2053 - 2058, 2060 - 2066.

8 aircrafts were changed to such an extent that they received a new tactical code:
2049 - DA+253 to DA+232
2057 - DA+122 to DA+112
2058 - DA+254 to DA+234
2060 - DA+257 to DA+237
2061 - DA+258 to DA+240
2062 - DA+129 to DA+119
2063 - Da+259 to DA+239
2066 - DA+126 to DA+120

10 of these Project "19" aircraft took part in the "Category III" tests: 2043, 2044, 2046, 2047, 2048, 2053, 2054, 2055, 2056, 2057. "Category III" were tests of operational mission profiles and system tests from April until July 1963.