Airworthiness Directive · Amendment 39-13949 · McDonnell Douglas Model MD-10-10F, MD-10-30F, MD-11F, DC-10-10F, and DC-10-30F Airplanes
McDonnell Douglas Model MD-10-10F, MD-10-30F, MD-11F, DC-10-10F, and DC-10-30F Airplanes
This AD applies to all McDonnell Douglas Model MD-10-10F, MD-10-30F, MD-11F, DC-10-10F, and DC-10-30F airplanes; certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for the McDonnell Douglas airplanes listed above. This AD requires identifying the part number of the cargo compartment smoke detectors and, if necessary, revising the Limitations section of the airplane flight manual to include procedures for testing the smoke detection system after the last engine is started. This AD also provides for the optional replacement of the subject smoke detectors with modified smoke detectors, which would terminate the operational limitation. This AD is prompted by a report indicating that the cargo smoke detectors can "lock up" during electrical power transfer from the auxiliary power unit to the engines. We are issuing this AD to identify and provide corrective action for a potentially inoperative smoke detector in the cargo compartment and ensure that the flightcrew is alerted in the event of a cargo compartment fire.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 30 days after the effective date of this AD, determine the make, model, and part number (P/N) of the smoke detectors in the cargo compartment.
(g) If no smoke detector identified in paragraph (f) of this AD is Meggitt Model 602, P/N 8930-(): No further action is required by this AD.
If any smoke detector identified in paragraph (f) of this AD is Meggitt Model 602, P/N 8930-(): Before further flight, revise the Limitations section of the AFM to include the information in paragraph (h)(1), (h)(2), or (h)(3), as applicable, of this AD. This AFM revision may be accomplished by inserting a copy of this AD into the AFM. This AFM revision advises the flightcrew of procedures for testing the smoke detection system after the last engine is started. Operate the airplane according to these limitations and procedures until the actions specified in paragraph (i) of this AD have been done.
(1) For Model MD-10-10F and MD-10-30F airplanes: Include the following information (also found in Boeing Interim Operating Procedure (IOP) 2-34.1, dated November 9, 2004, to the Boeing MD-10 Flight Crew Operations Manual):
| “Add procedural step after HYD Control Panel: | |
| Manual Cargo Fire Test | CHECKED |
Push and hold CARGO FIRE MANUAL TEST switch until ‘CARGO FIRE TEST’ alert is displayed on EAD.
NOTES: During the test, on some Series 30 aircraft, the ‘CRG FLO FWD DISAG’ alert may be displayed.
If ‘CRG FIRE TST FAIL’ alert is displayed, select AIR synoptic. Failed heat or smoke detectors are displayed as amber rectangles with an “F” inside. Passed heat detectors are displayed as amber circles and passed smoke detectors are displayed as amber triangles. If there is one or more failed smoke detector(s), pull circuit breakers D-12 (CARGO SMK DET & LTS) and D-13 (CARGO OVHT) on left overhead circuit breaker panel. Reset after 2 seconds.
Re-accomplish ‘Manual Cargo Fire Test’ and confirm ‘CRG FIRE TST FAIL’ alert is not displayed. If ‘CRG FIRE TST FAIL’ alert is again displayed, contact maintenance.”
(2) For Model MD-11F airplanes: Insert the following information (also found in Boeing IOP 2-212.1, dated November 9, 2004, to the Boeing MD-11 Flight Crew Operations Manual):
| “Add procedural step after HYD Control Panel: | |
| Manual Cargo Fire Test | CHECKED |
Push and hold CARGO FIRE MANUAL TEST switch until ‘CARGO FIRE TEST’ alert is displayed on EAD.
NOTES: During the test, the ‘CRG FLO FWD DISAG’ and ‘CRG FLO AFT DISAG’ alerts may be displayed.
If ‘CRG FIRE TST FAIL’ alert is displayed, select AIR synoptic. Failed heat or smoke detectors are displayed as amber rectangles with an ‘F’ inside. Passed heat detectors are displayed as amber circles and passed smoke detectors are displayed as amber triangles. If there is one or more failed smoke detector(s), pull circuit breakers D-12 (CARGO SMK DET & LTS) and D-13 (CARGO OVHT) on left overhead circuit breaker panel. Reset after 2 seconds.
Re-accomplish ‘Manual Cargo Fire Test’ and confirm ‘CRG FIRE TST FAIL’ alert is not displayed. If ‘CRG FIRE TST FAIL’ alert is again displayed, contact maintenance.”
(3) For Model DC-10-10F and DC-10-30F airplanes: Insert the following information (also found in Boeing IOP 2-70, dated November 24, 2004, to the Boeing DC-10 Flight Crew Operating Manual):
| “Annunciator/Door Lights | NORMAL/OFF |
C/M-2 and C/M-3 observe annunciator lights.
If a light is on, check system configuration and take appropriate action.
| LWR CARGO FIRE/CREW REST AREA SMOKE Detectors | TEST/ARM |
Move FIRE/SMK DET switch to TEST and hold. Observe the REST AREA SMK DET, FWD SMK DET, CREW REST AREA SMOKE, FWD CARGO FIRE, AFT SMK DET, HEAT DET and AFT CARGO FIRE lights are on. At the pilot's overhead annunciator panel, observe CARGO FIRE and CREW REST AREA SMOKE lights are on. At the glareshield, observe both MASTER WARN lights are on.
Release switch to ARM position.
If one or more lights failed to come on during the test, pull circuit breakers D-3 (CARGO CREW REST SMOKE DETS & INDS) and D-4 (CARGO OVERHEAT). Reset after two seconds.
Re-accomplish test.
If test is not successful, contact maintenance.”
(i) Replacement of Meggitt Model 602 smoke detectors P/N 8930-() with modified smoke detectors in accordance with Meggitt Safety Systems Service Information Letter 8930-26-01, dated November 8, 2004, terminates the operational limitation required by paragraph (h) of this AD. After all P/N 8930-() smoke detectors have been replaced on the airplane, the operational limitation specified in paragraph (h) of this AD may be removed from the AFM.
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.
