AD 85-11-52 R1

85-11-52 R1 BOEING: Amendment 39-5105. Applies to Model 737-300 series airplanes equipped with Plessey Type 8240 Mark 1, 2, or 3 fuel boost pumps or TRW 10-60533-1 fuel boost pumps, certificated in any category.

To prevent engine flameouts during climb, accomplish the following, unless already accomplished:

1. Before further flight ensure that the fuel being used is one of the following types: o Jet A or A1 conforming to specification ASTM-D-1655; o JP5 conforming to MIL-T-5624; o Fuels conforming to DERD 2494 or 2498; or o Fuels conforming to AIR 3404 or 3405.

2. Within 48 hours incorporate the following information into the Limitations Section of the Airplane Flight Manual and provide to crews:

"The only approved fuels are Jet A and A1 conforming to Specification ASTM-D-1655, JP5 conforming to MIL-T-5624, fuels conforming to DERD 2494 or 2498, and fuels conforming to AIR 3404 or 3405."

3. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

NOTE: Compliance with paragraph 2. of this directive may be effected by including a copy of this AD in the Airplane Flight Manual and Operating Manual.

This amendment becomes effective August 6, 1985. It was effective earlier to all recipients of telegraphic AD 85-11-52, issued June 7, 1985, which contained this amendment.