Airworthiness Directive · Amendment 39-15875 · McDonnell Douglas Model DC-8-50 Series Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-60 Series Airplanes; Model DC-8-60F Series Airplanes; Model DC-8-70 Series Airplanes; and Model DC-8-70F Series Airplanes
McDonnell Douglas Model DC-8-50 Series Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-60 Series Airplanes; Model DC-8-60F Series Airplanes; Model DC-8-70 Series Airplanes; and Model DC-8-70F Series Airplanes
This AD applies to all McDonnell Douglas airplanes identified in Table 1 of this AD, certificated in any category.
| Model |
|---|
| (1) DC-8-51, DC-8-52, DC-8-53, and DC-8-55 airplanes. |
| (2) DC-8F-54 and DC-8F-55 airplanes. |
| (3) DC-8-61, DC-8-62, and DC-8-63 airplanes. |
| (4) DC-8-61F, DC-8-62F, and DC-8-63F airplanes. |
| (5) DC-8-71, DC-8-72, and DC-8-73 airplanes. |
| (6) DC-8-71F, DC-8-72F, and DC-8-73F airplanes. |
We are adopting a new airworthiness directive (AD) for all McDonnell Douglas airplanes identified above. This AD requires revising the airplane flight manual to provide the flightcrew with procedures to preclude dry running of the fuel pumps. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent pump inlet friction (i.e., overheating or sparking) when the fuel pumps are continually run as the center wing fuel tank becomes empty, and/or electrical arc burnthrough, which could result in a fuel tank fire or explosion.
Comply with this AD within the compliance times specified, unless already done.
Within 14 days after the effective date of this AD, revise the Certificate Limitations Section of the Boeing DC-8 AFM to include the following procedures that preclude dry running of fuel pumps and/or electrical arc burnthrough (this may be done by inserting a copy of this AD into the AFM):
“During level flight, the applicable alternate or center wing auxiliary tank boost pump switch must be placed in the OFF position no more than 5 minutes after the auto fill light is continuously illuminated.
DO NOT reset any tripped fuel pump circuit breakers.”
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
