AD 2002-24-51 Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes; Model 747 Series Airplanes; and Model 757 Series Airplanes

Models named: 737-600, -700, -700C, -800, -900 series, 747 series, 757 series. Read the applicability below — it usually turns on serial or part numbers too.

Model 737-600, -700, -700C, -800, and -900 series airplanes; Model 747 series airplanes; and Model 757 series airplanes; certificated in any category.

Required as indicated, unless accomplished previously. To require the flightcrew to maintain certain minimum fuel levels in the center fuel tanks, and to prohibit the use of the horizontal stabilizer fuel tank (for Model 747-400 series airplanes) and certain center auxiliary fuel tanks (on Model 747 series airplanes), accomplish the following: Note 1: Accomplishment of the actions required by paragraphs (a) through (d) of AD 2002-19-52, amendment 39-12900, is acceptable for compliance with the requirements of paragraphs (b) through (e) of this AD. This AD does not require that those actions be repeated unless the terminating actions specified in paragraphs (g) and (h) of AD 2002-19-52 have been accomplished and the AFM revisions and placard(s) have been removed. (a) Accomplishment of the terminating actions specified in paragraphs (g) and (h) of AD 2002-19-52, amendment 39-12900, does not allow removal of the AFM revisions required by paragraphs (a), (b), (c), and (d) of AD 2002-19-52, or paragraphs (b), (c), (d), and (e) of this AD. Airplane Flight Manual (AFM) Revision: Model 737-600, -700, -700C, -800, and -900 (b) For Model 737-600, -700, -700C, -800, and -900 series airplanes: Within 4 days after receipt of this AD, revise the Limitations Section of the AFM to include the following (this may be accomplished by inserting a copy of this AD into the AFM): “Certificate Limitations The center tank fuel pumps must be OFF for takeoff if center tank fuel is less than 5,000 pounds (2,300 kilograms) with the airplane readied for initial taxi. Both center tank fuel pump switches must be selected Off when center tank fuel quantity reaches approximately 1,000 pounds (500 kilograms) during climb and cruise or 3,000 pounds (1,400 kilograms) during descent and landing. The fuel pumps must be positioned Off at the first indication of fuel pump low pressure. The CWT fuel quantity indication system must be operative to dispatch with CWT mission fuel. Note The CONFIG indicator will annunciate when center tank fuel exceeds 1,600 pounds (800 kilograms) and the center tank fuel pump switches are Off. Do not accomplish the CONFIG non-normal procedure prior to or during takeoff with less than 5,000 pounds (2,300 kilograms) of center tank fuel or during descent and landing with less than 3,000 pounds (1,400 kilograms) of center tank fuel. Note In a low fuel situation, both center tank pumps may be selected On and all center tank fuel may be used. If the main tanks are not full, the zero fuel gross weight of the airplane plus the weight of center tank fuel may exceed the maximum zero fuel gross weight by up to 5,000 pounds (2,300 kilograms) for takeoff, climb and cruise and up to 3,000 pounds (1,400 kilograms) for descent and landing, provided that the effects of balance (CG) have been considered. If a center tank fuel pump fails with fuel in the center tank, accomplish the Fuel Pump Low Pressure non-normal procedure. When defueling center or main wing tanks, the Fuel Pump Low Pressure indication lights must be monitored and the fuel pumps positioned to Off at the first indication of fuel pump low pressure. Defueling with passengers on board is prohibited. The limitations contained in this AD supersede any conflicting basic airplane flight manual limitations.” AFM Revision: Model 747-100, -200B, -200F, -200C, -100B, -300, -100B SUD, 747SR, and 747SP (c) For Model 747-100, -200B, -200F, -200C, -100B, -300, -100B SUD, 747SR, and 747SP series airplanes: Within 4 days after receipt of this AD, revise the Limitations Section of the AFM to include the following (this may be accomplished by inserting a copy of this AD into the AFM): “Certificate Limitations Fueling and use of the center auxiliary fuel tank and auxiliary fuel tanks 1 and 4 (if installed) is prohibited. The center wing tank (CWT) must contain a minimum of 17,000 pounds (7,700 kilograms) of fuel prior to engine start, if the CWT override/jettison pumps are to be selected On during flight. The CWT fuel quantity indication system must be operative to dispatch with CWT mission fuel. Both CWT override/jettison pump switches must be selected Off at or before the CWT fuel quantity reaches 7,000 pounds (3,200 kilograms), if the CWT fuel quantity is less than 50,000 pounds (22,700 kilograms) prior to engine start. The CWT override pumps may be selected On during stabilized cruise conditions. Both CWT override/jettison pump switches must be selected Off at or before the CWT fuel quantity reaches 3,000 pounds (1,400 kilograms). Both CWT override/jettison pump switches must be selected Off at or before the CWT fuel quantity reaches 3,000 pounds (1,400 kilograms), if the CWT fuel quantity is greater than or equal to 50,000 pounds (22,700 kilograms) prior to engine start. Both CWT override/jettison pumps must be selected Off when either CWT override/jettison fuel pump low pressure light illuminates. Warning Do not reset a tripped fuel pump circuit breaker. Warning Do not cycle the CWT pump switches from On to Off to On with any continuous low pressure indication present. Note The CWT may be emptied normally in an emergency fuel jettison. Note In a low fuel situation, both CWT override/jettison pumps may be selected On and all CWT fuel may be used. If a center wing tank pump fails with fuel in the center tank, shut off the affected fuel pump. If the main tanks are not full, the zero fuel gross weight of the airplane plus the weight of CWT tank fuel may exceed the maximum zero fuel gross weight by up to 7,000 pounds (3,200 kilograms) for takeoff, climb, cruise, descent, and landing, provided that the effects of balance (CG) have been considered. When defueling center or main wing tanks, the Fuel Pump Low Pressure indication lights must be monitored and the fuel pumps positioned to Off at the first indication of fuel pump low pressure. Defueling with passengers on board is prohibited. The limitations contained in this AD supersede any conflicting basic airplane flight manual limitations.” AFM Revision: Model 747-400, -400D, and -400F (d) For Model 747-400, -400D, and -400F series airplanes: Within 4 days after receipt of this AD, revise the Limitations Section of the AFM to include the following (this may be accomplished by inserting a copy of this AD into the AFM): “Certificate Limitations Fueling and use of the horizontal stabilizer tank (if installed) is prohibited if a placard prohibiting its use is installed. The center wing tank (CWT) must contain a minimum of 17,000 pounds (7,700 kilograms) prior to engine start, if the CWT override/jettison pumps are to be selected On during flight. The CWT fuel quantity indication system must be operative to dispatch with CWT mission fuel. Both CWT override/jettison pump switches must be selected Off at or before CWT fuel quantity reaches 7,000 pounds (3,200 kilograms), if CWT fuel quantity is less than 50,000 pounds (22,700 kilograms) prior to engine start. The CWT override pumps may be selected On during stabilized cruise conditions. Both CWT override/jettison pump switches must be selected Off at or before the CWT fuel quantity reaches 3,000 pounds (1,400 kilograms). Note With CWT override/jettison pumps selected Off and CWT fuel quantity greater than 6,000 pounds (2,800 kilograms), the Fuel OVRD CTR L & R EICAS messages will be displayed. Do not accomplish the associated non-normal procedure. Both CWT override/jettison pump switches must be selected Off at or before CWT fuel quantity reaches 3,000 pounds (1,400 kilograms), if CWT fuel quantity is greater than or equal to 50,000 pounds (22,700 kilograms) prior to engine start. Both CWT override/jettison pumps must be selected OFF when either CWT override/jettison fuel pump low pressure light illuminates. Warning Do not reset a tripped fuel pump circuit breaker. Warning Do not cycle CWT override/jettison pump switches from On to Off to On with any continuous low pressure indication present. Note The center wing tank may be emptied normally during an emergency fuel jettison. Note In a low fuel situation, both CWT override/jettison pumps may be selected On and all CWT fuel may be used. If a center wing tank pump fails with fuel in the center tank, accomplish the Fuel OVRD CTR L, R non-normal procedure. If the main tanks are not full, the zero fuel gross weight of the airplane plus the weight of CWT tank fuel may exceed the maximum zero fuel gross weight by up to 7,000 pounds (3,200 kilograms) for takeoff, climb, cruise, descent, and landing, provided that the effects of balance (CG) have been considered. When defueling any fuel tanks, the Fuel Pump Low Pressure indication lights must be monitored and the fuel pumps positioned to Off at the first indication of fuel pump low pressure. Defueling with passengers on board is prohibited. The limitations contained in this AD supersede any conflicting basic airplane flight manual limitations.” AFM Revision: Model 757 (e) For Model 757 series airplanes: Within 4 days after receipt of this AD, revise the Limitations Section of the AFM to include the following (this may be accomplished by inserting a copy of this AD into the AFM): “Certificate Limitations The center tank fuel pumps must be Off for takeoff if center tank fuel is less than 5,000 pounds (2,300 kilograms) with the airplane readied for initial taxi. Both center tank fuel pump switches must be selected Off when center tank fuel quantity reaches approximately 1,000 pounds (500 kilograms) during climb, cruise, or descent. The center tank fuel pumps must be positioned Off at the first indication of fuel pump low pressure. The CWT fuel quantity indication system must be operative to dispatch with CWT mission fuel. Warning Do not reset a tripped fuel pump circuit breaker. Note The Fuel CONFIG light will illuminate when there is fuel in the center tank that exceeds 1,200 pounds (600 kilograms) and the center tank fuel pump switches are Off. Do not accomplish the associated non-normal procedure prior to or during takeoff with less than 5,000 pounds (2,300 kilograms) of center tank fuel, unless there is an imbalance between main tanks or fuel is low in either main tank. After canceling the Fuel CONFIG light, monitor fuel quantity indications and accomplish the appropriate non-normal procedure if a main tank imbalance or main tank low fuel quantity occurs. Note In a low fuel situation, both center tank pumps may be selected On and all center tank fuel may be used. If the main tanks are not full, the zero fuel gross weight of the airplane plus the weight of center tank fuel may exceed the maximum zero fuel gross weight by up to 5,000 pounds (2,300 kilograms) for takeoff, climb, cruise, descent, and landing, provided that the effects of balance (CG) have been considered. If a center tank fuel pump fails or indicates low pressure with fuel in the center tank, accomplish the Fuel Pump non-normal procedure. When defueling center or main wing tanks, the Fuel Pump Low Pressure indication lights must be monitored and the fuel pumps positioned to Off at the first indication of fuel pump low pressure. Defueling with passengers on board is prohibited. The limitations contained in this AD supersede any conflicting basic airplane flight manual limitations.” Alternative Methods of Compliance (f)(1) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA. Operators shall submit their requests through an appropriate FAA Principal Operations Inspector, who may add comments and then send it to the Manager, Seattle ACO. (2) Alternative methods of compliance, approved previously in accordance with AD 2002-19-52, amendment 39-12900, are not considered to be approved as alternative methods of compliance with this AD. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO. Special Flight Permits (g) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. Effective Date (h) This amendment becomes effective on January 7, 2003, to all persons except those persons to whom it was made immediately effective by emergency AD 2002-24-51, issued on November 23, 2002, which contained the requirements of this amendment. Issued in Renton, Washington, on December 23, 2002. Vi L. Lipski, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 02-32883 Filed 12-31-02; 8:45 am] BILLING CODE 4910-13-P