samee380 wrote:PIA Pakistan International Cargo B 707-300C AP-AWP
PK777 wrote:PIA PAKISTAN INTERNATIONAL CARGO Boeing 707-320F - Reg: AP-AWP

Correction:
PIA
didn't operate any Boeing 707 registered as AP-AWP. The registration of aircraft model in PIA Cargo markings should be changed to
AP-AWD.
Here's photo of AP-AWD in PIA Cargo markings. The exact & correct designation for AP-AWD is
Boeing 707-373C.
PIA Cargo Boeing 707-373C (AP-AWD) - Abbas Ali Collection
Boeing 707-320
C were
Convertible models (C = Convertible). These 707s had main deck side cargo door and could be used as full passenger aircraft, full cargo aircraft or operated in mixed configuration i.e. half cargo/half passenger. Despite the convertible option, a number of these were delivered as pure freighters. The pure freighter Boeing 707-320Cs were without cabin windows. One such pure freighter Boeing 707 operated by PIA was Boeing 707-331C (registration
N15711). It was on lease from Trans World Airlines (TWA) to PIA from May 1979 to March 1980. Here's photo of N15711 in PIA markings.
Pure freighter Boeing 707-331C (registration N15711) in PIA Cargo markings. Note absence of cabin windows (except exit door windows) - Copyright Peter Frei
Here I would also like to mention Boeing 707-320
B model. It was built as passenger aircraft without main deck side cargo door. A Boeing 707-320B operated by PIA was Boeing 707-351B (
AP-BAA).
PIA Boeing 707-351B (AP-BAA) at Osaka International Airport, Japan. Note absence of main deck side cargo door - Copyright Nobuhiko Hirai