P-1 5504 with its bomb bay doors open during a fly past at RAF Fairford during this year's Royal International Air Tattoo. The bomb bay has eight stations.

The aircraft's HLR-109B electronic support measures suite is built by the Mitsubishi Electric Corporation, the primary antenna is housed in a small radome above the flight deck.

For submarine hunting, the P-1 is fitted with an HSQ-102 magnetic anomaly detector mounted in a tail 'stinger'.

The first XP-1 5501 prototype on approach to Gifu Air Base. The aircraft was delivered to the TRDI on August 29, 2008.