AD 86-01-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | LOCKHEED-CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | LOCKHEED-CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | LOCKHEED-CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | LOCKHEED-CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
Unsafe Condition
Malfunction of the passenger oxygen system when activated due to dormant shorted transient suppression capacitors in the oxygen initiator sequence timer switch(es).
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Required Actions
Perform a resistance check of oxygen initiator sequence timer switch(es) in accordance with Lockheed Service Bulletin 093-35/041, Part I, dated December 18, 1985, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office. Alternate means of compliance may be used if approved by the same authority.
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Compliance Time
Within 30 days after the effective date of this AD
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Affected Aircraft
Lockheed Model L-1011-385 series airplanes equipped with Dynamic Controls Corporation oxygen initiator sequence timer switch(es), Part Numbers 11035-2/-3.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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