DISCLOSURE / FILEGrissom Liberty Bell 7 Recovery Dye Pack Failure
NASA-UAP-D014, Mercury-Redstone 4, July 21, 1961
A NASA communications record from July 21, 1961 capturing Liberty Bell 7 recovery-team discussion of a dye marker pack that failed to activate in the North Atlantic.
Brief
This document, catalogued NASA-UAP-D014 in the May 2026 Department of War disclosure, covers the post-splashdown recovery phase of Mercury-Redstone 4 — Gus Grissom's suborbital Liberty Bell 7 mission, the second crewed spaceflight of Project Mercury. Recovery team communications reference a dye pack in the water that did not activate as expected, a detail that carries weight given the capsule's notorious sinking during recovery after the hatch blew prematurely. The document is image-only with no machine-readable text extracted; the UAP-relevant content, if any, cannot be independently assessed from the description blurb alone.
Metadata
- Agency
- NASA
- Release
- 5/22/26
- Incident
- 7/21/61
- Location
- North Atlantic Ocean
- Type
- AUDIO • .aud
- Length
- 0:27
- Programs
- Project Mercury, Mercury-Redstone 4 (MR-4), Liberty Bell 7
- Tags
- North Atlantic Ocean, 1961, recovery operations, dye marker failure, Mercury-Redstone 4, Liberty Bell 7, post-splashdown
Key points
- The document concerns the recovery phase of Mercury-Redstone 4 (Liberty Bell 7), the fourth Project Mercury launch and second crewed American spaceflight, on July 21, 1961.
- Recovery team communications discuss a dye pack in the water that did not activate — a standard open-ocean marker tool used to locate capsule and astronaut after splashdown.
- The incident date coincides with the mission's most consequential anomaly: the Liberty Bell 7 hatch blew prematurely, the capsule flooded and sank, and Grissom nearly drowned before helicopter recovery.
- The document is image-only; no text layer was extracted, and no UAP-specific content can be confirmed from the war.gov description alone.
- This is catalogued as part of the Department of War's May 22, 2026 UAP disclosure release, though the described subject matter is recovery-operations communication rather than an explicit anomaly report.
Most interesting
- Liberty Bell 7 sank in roughly 15,000 feet of water in the North Atlantic immediately after recovery and was not retrieved until 1999 — 38 years later — by a private expedition.
- Grissom disputed throughout his life that he accidentally triggered the hatch explosive bolt; the debate was never officially resolved during his lifetime.
- Dye marker packs were standard Mercury-era recovery equipment: when activated, they dispersed a bright yellow-green fluorescent dye across the water surface to guide recovery helicopters and ships to the astronaut's position.
- The dye pack failure noted in this record, if directly tied to the capsule rather than a separate marker, would have compounded an already dangerous open-ocean rescue with a degraded visual locator.
- MR-4 was the only Mercury capsule not successfully recovered during or immediately after its mission; all other Mercury capsules are in museum collections today.
- The document's classification as UAP-D014 places it in the Department of War's UAP disclosure corpus, though the war.gov description references exclusively the dye pack anomaly — not a craft, object, or sensor contact.