I just looked up "1138" at
Wikipedia and found Indy references:
Raiders of the Lost Ark - The number is heard spoken through an intercom in German, "Eins-eins-drei-acht." Also, in the scene where Indy is fighting the bald German officer (the German Mechanic, it would seem), while the plane is spinning around, if you look at the wing number of the plane, you will see that the serial number is THX-1138.
Indiana Jones and The Last Crusade - 1138 is in roman numerals MCXXXVII in Dr. Jones' Notebook in the library scene.
Indiana Jones and the Kingdom of the Crystal Skull - The street address on the side of the house at the nuclear test site where Indy finds the lead lined refrigerator is 138.
eroc said:
No. Has it made an appearance in any other Indy film? The joke is old and belongs in Star Wars lore.
"TK 1-1-3-8, why aren't you at your post?"
Ummm, slight weapons malfunction here..."
Actually, in
Star Wars it's used in Luke's line "Prisoner transfer, from cell block 1138." (Though in an early draft, TK-421
was TK-1138. This appears in the novelization as well.)
The reference in
The Empire Strikes Back is a bit more of a stretch: "Send Rogues 10 and 11 to station 38."
I wasn't sure where it was in
Return of the Jedi, but according to the Wiki article, it's marked on the side of Leia/Boussh's helmet.