77-01-03: Carburetor Air Filter Boxes
FAA order 77-01-03 is an airworthiness directive in force since January 14, 1977. The FAA's subject line: Carburetor Air Filter Boxes. It names Piper PA-28 Cherokee, Warrior, Archer and Arrow: about 18,633 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Piper Aircraft Inc.
- Models
- PA-28-151
- On this site
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,633 registered
Dates and paperwork
- In force since
- January 14, 1977
- Published
- January 10, 1977 (signed December 29, 1976)
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (1,562 characters)
77-01-03 PIPER AIRCRAFT CORPORATION: Amendment 39-2801. Applies to Model PA-28-151 airplanes, serial numbers 28-7415001 through 28-7715278 and 28-7715289 certificated in all categories. \n\n\tCompliance required within the next 10 hours' time in service after the effective date of this AD, unless already accomplished. \n\n\tTo detect and correct those carburetor air filter boxes that do not contain a drain hole, accomplish the following: \n\n\t(a)\tOpen the top right side engine cowl door to gain access to the carburetor air filter box, Piper Part Number 35462-00, at the right hand bottom section of the engine compartment. \n\n\t(b)\tCheck visually and by feel to determine whether the carburetor air filter box contains a drain hole in the lower rear corner of the outside half of the carburetor air filter box. (See figure) This check may be performed by the pilot. \n\n\n\nAD 77-01-03 \n\n\t(c)\tIf the box contains a drain hole, accomplish (f). \n\n\t(d)\tIf the box does not contain a drain hole, accomplish (e) and (f). \n\n\t(e)\tModify the carburetor air filter box as follows: \n\n\t\t(1)\tRemove and disassemble the carburetor air filter box. \n\n\t\t(2)\tDrill a .19 inch diameter hole in the lower rear corner of the outside half of the carburetor air filter box. (See figure) \n\n\t\t(3)\tReassemble and reinstall the carburetor air filter box. \n\n\t(f)\tClose the engine cowl and return the airplane to service. \n\n\tPiper Service Bulletin 536 also pertains to this subject. \n\n\tThis amendment becomes effective January 14, 1977.
Related safety bulletins advice on the same designs, not orders
2022-10-192022-20 · Wing Spar
2021-06-29AIR-21-10 · Wing, Attach Fittings (JASC 5740)
2021-03-30AIR-21-07 · WING SPAR, Verification of Correct Washers used with Wing Spar Attach Bolts
2018-11-21SW-18-31 · NAVIGATION, ATTITUDE, AND DIRECTION DATA SYSTEM
2018-08-30CE-18-25 · Powerplant; Air Intake
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 7, 2026. Connections as data: /graph/directive/77-01-03.json · aircraft systems.