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| | Boeing Model 707 Airplanes, and Boeing Model 720 and |
 | | We are issuing this AD to prevent dry operation of the fuel pumps in the center fuel tank, which could result in high temperatures or sparks inside the fuel tank, ignition of fuel vapors, and consequent fire or explosion. |
 | | We are also issuing this AD to prohibit the resetting of a tripped circuit breaker for a fuel pump in any tank, which could allow an electrical fault to override the protective features of the circuit breaker, and result in sparks inside the fuel tank, ignition of fuel vapors, and consequent fire or explosion. |
 | | However, operators that have previously incorporated the information in Approval Reference Number 045151 of the Boeing Model 707 AFM, dated December 6, 2004, are not required to change the AFM. |
| www.airweb.faa.gov /Regulatory_and_Guidance_Library/rgad.nsf/0/3a061520c57be4c7862570890058e810!OpenDocument (1879 words) |
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