AD 2006-04-04

final rule
Data completeness: 70%

Airworthiness Directives; Meggitt Model 602 Smoke Detectors Approved Under Technical Standard Order (TSO) TSO-C1C and Installed on Various Transport Category Airplanes, Including but Not Limited to Aerospatiale Model ATR42 and ATR72 Airplanes; Boeing Model 727 and 737 Airplanes; McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30 and DC-10-30F (KC-10A and KDC-10), DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F, MD-11, and MD-11F Airplanes

AD Number
2006-04-04
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2005-22031
FR Citation
71 FR 8446

Applicability

TypeManufacturerModelDetails
aircraft Boeing 727 and 737 Airworthiness Directives; Meggitt Model 602 Smoke Detectors Approved Under Technical Standard Order (TSO) TSO-C1C and Installed on Various Transport Category Airplanes, Including but Not Limited to Aerospatiale Model ATR42 and ATR72 Airplanes; Boeing Model 727 and 737 Airplanes; McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30 and DC-10-30F (KC-10A and KDC-10), DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F, MD-11, and MD-11F Airplanes
aircraft McDonnell Douglas DC-10-10 Airworthiness Directives; Meggitt Model 602 Smoke Detectors Approved Under Technical Standard Order (TSO) TSO-C1C and Installed on Various Transport Category Airplanes, Including but Not Limited to Aerospatiale Model ATR42 and ATR72 Airplanes; Boeing Model 727 and 737 Airplanes; McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30 and DC-10-30F (KC-10A and KDC-10), DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F, MD-11, and MD-11F Airplanes

Unsafe Condition

The affected smoke detectors can 'lock up' during electrical power transfer from the auxiliary power unit to the engines.

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Required Actions

Replace the affected smoke detectors with modified smoke detectors.

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Compliance Time

Within 6 months of the effective date.

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Affected Aircraft

Meggitt Model 602 smoke detectors approved under TSO-C1C, installed on various transport category airplanes, including but not limited to Aerospatiale ATR42 and ATR72, Boeing 727 and 737, and McDonnell Douglas DC-10, MD-10, and MD-11 series airplanes.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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