| AD Number | 76-11-01 | Status | Active |
| Effective Date | May 31, 1976 | Issue Date | May 17, 1976 |
| Docket Number | Unknown | Amendment | 39-2623 |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | --- - _EMPTY_ |
| Citation | This information is not available. | ||
| Manufacturer(s) | Piper Aircraft Inc. |
| Model(s) | PA-31P |
76-11-01 PIPER: Amendment 39-2623. Applies to PA-31P airplanes certificated in all categories.
To prevent possible adverse airplane vibration effects at higher altitudes, accomplish the following within the next 25 hours in service after the effective date of this Airworthiness Directive, unless already accomplished:
(a) Attach the following operating limitation placard on the pilot's side window molding in full view of the pilot:
OPERATING SPEEDS
ALT
Vno
Vne
1000
mph
mph
13
230
278
15
230
268
17
230
258
19
221
248
21
212
238
23
203
228
25
194
218
27
185
208
29
176
198
(NOTE: Speeds shown are CAS)
(b) Incorporate Piper PA-31P Airplane Flight Manual revision dated January 22, 1976 in Piper PA-31P Airplane Flight Manual 1615.
(Piper Service Bulletin No. 478 refers to this same subject.)
This amendment is effective May 31, 1976.