In support of an official event 

The Museum will be closed Sunday, May 25
In addition, the Fourth Hangar will be closed Saturday, May 24

Guided tours of the 4th building, normally scheduled at 3:00 p.m. daily, are canceled through May 28.

Effective immediately, the William E. Boeing Presidential Gallery will have limited guest access due to scheduled event preparations. The only accessible exhibits during this time include: Douglas VC-54 Sacred Cow, Flying the President Exhibit, USAF Established Artifact. We anticipate full gallery access will resume by June 5, 2025.

Packard 3A-2500

Note: This item is currently in storage.

The 3A-2500 is a 12-cylinder, liquid-cooled, direct-drive engine. Packard developed this engine, an improved version of the Packard 2A-2500 used on the Huff-Daland Keystone LB-1 bomber, in the late 1920s. This basic engine also was produced in geared and inverted configurations.

TECHNICAL NOTES:
Displacement: 2,500 cu.in.
Rated rpm: 2,000
Weight: 1,223 lbs.

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