Boeing XB-15 prototype 35-277
Serial 35-277 was the only Boeing XB-15, the flight article used to test the Model 294's very-heavy bomber concept and later converted to the XC-105 cargo transport. Its unique status, record-setting load tests, and later humanitarian transport work make it a significant individual airframe rather than a routine serial entry.
Identity
- Aliases
- Boeing Model 294 35-277XC-105 Grandpappy
- Name
- Boeing XB-15 prototype 35-277
- Status
- retired
Details
- Description
- Serial 35-277 was the only Boeing XB-15, the flight article used to test the Model 294's very-heavy bomber concept and later converted to the XC-105 cargo transport. Its unique status, record-setting load tests, and later humanitarian transport work make it a significant individual airframe rather than a routine serial entry.
- First Flight Date
- 1937-10-15
- Manufacturer
- Vehicle Family
Links
Assets & Meta
- Creation Time
- August 9, 2026 at 04:28:40 UTC
- Updated Time
- August 9, 2026 at 04:28:40 UTC
Other
- Serial Number
- 35-277
- Vehicle Code
- 35-277