ThanQ Baker
Boeing P-8A Poseidon
As well^^^
P-3C AIP {Anti-Surface Warfare Improvement Program} (US): P-3C Update III with interior modification to add ASQ-222 mission computer, ASQ-78A/B acoustics system, and APS-137 ISAR radar; OMEGA navigation system replaced with Global Positioning System (GPS) and TADIL-J/Link 16 data link system added''
and a…
P-3C BMUP {Update III Block Modification Upgrade Program} (US): 25 aircraft with interior modification to convert selected NUD/SUDS, UD2/SUDS and UD2.5/SUDS to carry ASQ-227 mission computer and ASQ-78B acoustics suite
…with a low flying :
P-3C: Third main production version/series. T56-A14 engines. The P-3C had A-NEW ASW suite and mission computer with a revised internal layout. Externally the P-3C featured electrically operated entry ladder; small fin-top antenna; externally loaded belly sonobuoy chutes; and three small windows on the aft right side (one window forward of the overwing emergency exit and two well aft). Initial production aircraft had a camera nose located on the lower part of the radome. Later production aircraft had retractable an IRDS turret in lieu of the nose camera. Beginning in the early 1980s existing camera noses were retrofitted with IRDS turrets. Early models were also known as P-3C "Baseline" or Non-Update (NUD) aircraft. All aircraft were later retrofitted with dual LTN-72 inertial navigation systems.