AD 99-16-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-600 Series | Airworthiness Directives; BOEING Model 737-600, -700, and -800 Series Airplanes |
| aircraft | The Boeing Company | 737-700 Series | Airworthiness Directives; BOEING Model 737-600, -700, and -800 Series Airplanes |
| aircraft | The Boeing Company | 737-800 Series | Airworthiness Directives; BOEING Model 737-600, -700, and -800 Series Airplanes |
Unsafe Condition
Improper grounding of the squib circuit ground studs of the engine fire extinguisher bottles prevents the engine fire extinguisher bottle from discharging when commanded, which could result in inability to extinguish an engine fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Test the squib circuit ground studs of the engine fire extinguisher bottles to measure resistance. Repair or replace the ground stud with a new ground stud or a standard built-up ground stud (nut and bolt type) if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 90 days after the effective date of this AD (August 24, 1999)
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Affected Aircraft
Boeing Model 737-600, -700, and -800 series airplanes with line numbers 1 through 110 inclusive, 112 through 183 inclusive, 185, 186, 188, 189, 191, 193, and 195.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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