| AD Number | 80-17-06 | Status | Active |
| Effective Date | August 13, 1980 | Issue Date | July 30, 1980 |
| Docket Number | Unknown | Amendment | 39-3874 |
| 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-31 PA-31-325 PA-31-350 |
80-17-06 PIPER AIRCRAFT CORPORATION: Amendment 39-3874. Applies to Model PA-31 and PA-31-325 airplanes, Serial Numbers 31-7401201 through 31-8012072; and PA-31-350 airplanes, Serial Numbers 31-7405401 through 31-8052162 certificated in all categories.
Compliance is required as indicated unless already accomplished.
To prevent the possible use of incorrect airspeed information during normal and emergency operations and to insure accessibility to emergency landing gear extension placards and operating equipment, accomplish the following within the next 50 hours time in service after the effective date of this AD:
(a) Check for the following placards on these airplanes to insure they are correct and accessible:
(1) Piper PA-31 Serial Numbers 31-7401201 through 31-8012072.
On top right side of instrument panel:
THIS AIRCRAFT MUST BE OPERATED AS A NORMAL CATEGORY AIRPLANE IN COMPLIANCE WITH THE OPERATING LIMITATIONS STATED IN THE FORM OF PLACARDS, MARKINGS AND MANUALS. NO ACROBATIC MANEUVERS (INCLUDING SPINS) APPROVED.
For Serial Numbers 31-7401201 through 31-7612110
FOR TYPES OF OPERATION SEE AIRPLANE FLIGHT MANUAL
For Serial Numbers 31-7712001 through 31-8012072
FOR TYPES OF OPERATION SEE PILOT'S OPERATING HANDBOOK
On top left side of instrument panel:
For Serial Numbers 31-7401201 through 31-7612110
MINIMUM CONTROL SPEED 85 MPH
MAXIMUM SPEED LANDING GEAR OPERATION 150 MPH
DESIGN MANEUVERING SPEED 183 MPH
SEE AIRPLANE FLIGHT MANUAL FOR ADDITIONAL SPEEDS
For Serial Numbers 31-7712001 through 31-7712103
MINIMUM CONTROL SPEED 76 KIAS
MAXIMUM SPEED LANDING GEAR OPERATION 129 KIAS
DESIGN MANEUVERING SPEED 159 KIAS
SEE PILOT'S OPERATING HANDBOOK FOR ADDITIONAL SPEEDS
For Serial Numbers 31-7812001 through 31-8012072
MINIMUM CONTROL SPEED 76 KIAS
MAXIMUM 5P. LG - RET. 129 KIAS EXTEND 156 KIAS
DESIGN MANEUVERING SPEED 159 KIAS
SEE PILOT'S OPERATING HANDBOOK FOR ADDITIONAL SPEEDS
On floor between pilot and copilot seats, check the following two placards for accessibility:
EMERGENCY GEAR EXTENSION
REMOVE COVER
EXTENSION INSTRUCTIONS ON REVERSE SIDE
On underside of emergency gear extension door:
EMERGENCY GEAR EXTENSION
1. PLACE GEAR SELECTOR IN DOWN POSITION.
2. PULL EMERGENCY PUMP HANDLE OUT AS FAR AS POSSIBLE.
3. PUMP HANDLE UP AND DOWN UNTIL ALL 3 GREEN LIGHTS COME ON. CONTINUE PUMPING UNTIL PRESSURE BUILDS UP AND SELECTOR HANDLE RETURNS TO NEUTRAL.
(2) Piper PA-31-325, Serial Numbers 31-7512001 through 31-8012072.
On top right side of instrument panel:
THIS AIRCRAFT MUST BE OPERATED AS A NORMAL CATEGORY AIRPLANE IN COMPLIANCE WITH THE OPERATING LIMITATIONS STATED IN THE FORM OF PLACARDS, MARKINGS AND MANUALS. NO ACROBATIC MANEUVERS (INCLUDING SPINS) APPROVED.
For Serial Numbers 31-7512001 through 31-7612110
FOR TYPES OF OPERATION SEE AIRPLANE FLIGHT MANUAL
For Serial Numbers 31-7712001 and UP
FOR TYPES OF OPERATION SEE PILOT'S OPERATING HANDBOOK
On left side, center of pilot's panel:
For Serial Numbers 31-7512001 through 31-7612110
MINIMUM CONTROL SPEED 85 MPH
MAXIMUM SPEED LANDING GEAR OPERATION 150 MPH
DESIGN MANEUVERING SPEED 183 MPH
SEE AIRPLANE FLIGHT MANUAL FOR ADDITIONAL SPEEDS
For Serial Numbers 31-7712001 through 31-7712103
MINIMUM CONTROL SPEED 71 KIAS
MAXIMUM SPEED LANDING GEAR OPERATION 127 KIAS
DESIGN MANEUVERING SPEED 155 KIAS
SEE PILOT'S OPERATING HANDBOOK FOR ADDITIONAL SPEEDS
For Serial Numbers 31-7812001 through 31-8012072
MINIMUM CONTROL SPEED 71 KIAS
MAXIMUM 5P. LG - RET. 127 KIAS EXTEND 152 KIAS
DESIGN MANEUVERING SPEED 155 KIAS
SEE PILOT'S OPERATING HANDBOOK FOR ADDITIONAL SPEEDS
On floor between pilot and copilot seats, check the following two placards for accessibility:
EMERGENCY GEAR EXTENSION
REMOVE COVER
EXTENSION INSTRUCTIONS ON REVERSE SIDE
On underside of emergency gear extensiondoor:
EMERGENCY GEAR EXTENSION
1. PLACE GEAR SELECTOR HANDLE IN DOWN POSITION.
2. PULL EMERGENCY PUMP HANDLE OUT AS FAR AS POSSIBLE.
3. PUMP HANDLE UP AND DOWN UNTIL ALL 3 GREEN LIGHTS COME ON.
CONTINUE PUMPING UNTIL PRESSURE BUILDS UP AND SELECTOR HANDLE RETURNS TO NEUTRAL.
On pedestal adjacent engine controls (when air conditioning is installed):
AIR CONDITIONING OFF
FOR SINGLE ENGINE OPERATION
Above airspeed indicator:
For Serial Numbers 31-7512001 through 31-7612110
ABOVE 12,000 FEET REDUCE VNE SPEED
3 MPH PER 1,000 FEET
For Serial Numbers 31-7712001 through 31-8012072
ABOVE 12,000 FEET REDUCE VNE SPEED
2.6 KTS PER 1,000 FEET
Adjacent to airspeed indicator:
For Serial Numbers 31-7512001 through 31-7612110
ABOVE 21,000 FEET REDUCE VNO SPEED
3 MPH PER 1,000 FEET
For Serial Numbers 31-7712001 through 31-8012072
ABOVE 21,000 FEET REDUCE VNO SPEED
2.6 KTS PER 1,000 FEET
(3) Piper PA-31-350, Serial Numbers 31-7405401 through 31-8052162.
On top right side of instrument panel:
THIS AIRCRAFT MUST BE OPERATED AS A NORMAL CATEGORY AIRPLANE IN COMPLIANCE WITH THE OPERATING LIMITATIONS STATED IN THE FORM OF PLACARDS, MARKINGS AND MANUALS. NO ACROBATIC MANEUVERS (INCLUDING SPINS) APPROVED.
For Serial Numbers 31-7405401 through 31-7652176
FOR TYPES OF OPERATION SEE AIRPLANE FLIGHT MANUAL
For Serial Numbers 31-7752001 and UP
FOR TYPES OF OPERATION SEE PILOT'S OPERATING HANDBOOK
On top left side of instrument panel:
For Serial Numbers 31-7405401 through 31-7652176
MINIMUM CONTROL SPEED 90 MPH
MAXIMUM SPEED LANDING GEAR OPERATION 150 MPH
DESIGN MANEUVERING SPEED 186 MPH
SEE AIRPLANE FLIGHT MANUAL FOR ADDITIONAL SPEEDS
For Serial Numbers 31-7752001 through 31-7752201
MINIMUM CONTROL SPEED 76 KIAS
MAXIMUM SPEED LANDING GEAR OPERATION 128 KIAS
DESIGN MANEUVERING SPEED 160 KIAS SEE PILOT'S OPERATING HANDBOOK FOR ADDITIONAL SPEEDSFor Serial Numbers 31-7852001 through 31-8052162
MINIMUM CONTROL SPEED 76 KIAS
MAXIMUM SP. LG - RET. 128 KIAS EXTEND 153 KIAS
DESIGN MANEUVERING SPEED 160 KIAS
SEE PILOT'S OPERATING HANDBOOK FOR ADDITIONAL SPEEDS
On floor between pilot and copilot seats, check the following two placards for accessibility:
EMERGENCY GEAR EXTENSION
REMOVE COVER
EXTENSION INSTRUCTIONS ON REVERSE SIDE
On underside of emergency.gear extension door:
EMERGENCY GEAR EXTENSION
1. PLACE GEAR SELECTOR HANDLE IN DOWN POSITION.
2. PULL EMERGENCY PUMP HANDLE OUT AS FAR AS POSSIBLE.
3. PUMP HANDLE UP AND DOWN UNTIL ALL 3 GREEN LIGHTS COME ON.CONTINUE PUMPING UNTIL PRESSURE BUILDS UP AND SELECTOR HANDLE RETURNS TO NEUTRAL
On pedestal adjacent engine controls (when air conditioning is installed):
AIR CONDITIONING OFF
FOR SINGLE ENGINE OPERATION
(b) If aircraft is equipped with floor runners to protect carpeting, an opening must be cut in the runner to match opening in carpet in order to provide access to Emergency Gear Extension Cover.
(c) Replace incorrect or missing placards with correct placards.
NOTE: Placards may be obtained from Piper Aircraft Corporation, Lakeland Division 3000 Medula Road, Lakeland, Florida 33803, telephone (813) 646-2911.
(d) When (a) through (c) above are accomplished, make an appropriate maintenance record entry. These actions may be accomplished by a pilot as provided in FAR 43.3(h).
An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region.
NOTE: Piper Service Bulletin 688 pertains to this subject.
This amendment becomes effective August 13, 1980.