How the 707-320B fits into the 707 story
707-320B is the representative branch of the Boeing 707 family, capturing the mature turbofan branch most closely associated with the family’s global peak.
This page isolates the 707-320B branch of the Boeing 707 family, focusing on the engines, service entry, seating, range, and mission role that justify a dedicated variant page while keeping the family history on the canonical parent URL.
Service entry
1962
Seating
147 to 189
Range
4,900 nm
Variant history
Why it branches from the family
The 707-320B is treated as the representative branch because it captures the mature turbofan branch most closely associated with the family’s global peak.
Variant pages stay intentionally narrower than the family page so differences in cabin, engines, mission, and market role remain clear without duplicating the full program history.
Fact rows
Reference snapshot
- ICAO designator
- B703
- Designator references
- Engines
- Pratt & Whitney JT3D
- Type data
- Service entry
- 1962
- Operator records
- Typical seating
- 147 to 189
- Operator layouts
- Range
- 4,900 nm
- Planning data
Return to the family page
Variant pages stay intentionally narrower than family pages. They isolate meaningful technical or commercial differences while the canonical family page holds the broader historical narrative.