AD 47-47-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | FS 2003 Corp. | PA-12 | Airworthiness Directives; Piper Model PA-12 Aircraft |
Unsafe Condition
A short circuit could occur between the battery terminal bases and the battery box.
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Required Actions
Install a wood filler block (Piper P/N 11367) fastened with two No. 6-32 x 1/2 flat head machine screws to the upper inside edge of the battery box. Alternatively, use any insulating spacer that achieves the same objective. If the Reading R24L Battery was replaced with an S24 Battery and proper spacer channels (Piper P/N 10926 and 10927) are installed, the change is unnecessary.
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Compliance Time
Compliance required as soon as practicable but not later than January 15, 1948.
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Affected Aircraft
PA-12 Aircraft Serial Numbers 12-1 to 12-796 Inclusive, 12-815, 12-817 to 12-822 Inclusive, 12-825 to 12-831 Inclusive, 12-833, 12-835 to 12-848 Inclusive, 12-863 to 12-893 Inclusive, 12-895 to 12-901 Inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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