SERVICE BULLETIN 161A
PIPER PA-16 · Service Bulletins
Overview
This service bulletin addresses fire hazards in Piper PA-16, PA-20, and PA-22 aircraft. It outlines necessary inspections and rework to eliminate combustible materials and ignition sources in the area aft of the firewall.
- Applicable to all PA-16, PA-20, and PA-22 aircraft, serial numbers 22-1 to 22-6194.
- Inspection and rework must be completed to prevent in-flight fires.
- Sound-proofing material contaminated with oil must be removed.
- Electrical wiring and hydraulic lines must be inspected for safety.
- Sealing of the firewall must be inspected every 100 hours.
- A visual daily inspection of exhaust and firewall seals is recommended.
- Installation of a specific Piper kit can eliminate the 100-hour inspection requirement.
Document
Source
Originally published by univair.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 1959
- File size ·
- 148 KB
- Publisher ·
- univair.com
- Language ·
- en
What is the SERVICE BULLETIN 161A?
The SERVICE BULLETIN 161A is a service bulletins for the PIPER PA-16, dated 1959.
Where does the SERVICE BULLETIN 161A come from?
This copy of the SERVICE BULLETIN 161A was originally published by univair.com and is hosted on Sprinkle as a free, searchable reference copy.
What year was the SERVICE BULLETIN 161A published?
The SERVICE BULLETIN 161A — the PIPER PA-16 service bulletins on file — is dated 1959.
Most owners only have the POH. Here's the essential set for the PIPER PA-16.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
In this document
Subject
Fire Hazard
Models Affected
All PA-16, PA-20 and PA-22 Airplanes, serial numbers 22-1 to 22-6194.
Inspection and Rework
Inspection and rework are necessary to eliminate combustible materials and ignition sources from the area aft of the firewall.
Sealing Requirements
Apply non-hardening putty between firewall and fuselage cowl blanket for an airtight seal.
Inspection Frequency
The firewall sealing must be inspected at each subsequent 100-hour interval.
Daily Inspection Recommendations
A visual daily line inspection of exhaust stack gaskets and firewall seals is advised.
Safety notes
- Compliance requested by December 15, 1957.
- Remove any sound-proofing material contaminated with oil.
- Inspect for chafing of wire insulation and replace inferior wiring.
- Ensure clearance between hydraulic lines, electrical wires, control cables, and fuel lines.
- Inspect firewall seals at each 100-hour interval.
Full document text
Customer Services No. SERVICE BULLETIN 161A F'iper Ai rcroft Corporation F . A . A . Approved l_ock Haven, Pennsylvania. U. 5 ..6 September 23, 1959 SUBJECT: Fire Hazard MODELS AFFECTED: All PA-16, PA-20 and PA-22 Airplanes, serial numbers 22-1 to 22-6194 inclusive This Bulletin supersedes Service Bulletin No . .L61 dated November 12, 1957. To preclude the possibility of in-flight fires, the following inspection and rework is necessary to eliminate combustible material and possible ignition sources from the area aft of the firewall underneath the forward cabin floor. Access to this section may be gained by removing the metal panels or opening the fuselage side cowl panels rearward of the firewall underneath the aircraft as shown in sketches on reverse side. 1. Compliance requested by December 15, 1957. On all PA-16 aircraft, all PA-20 aircraft and PA-22 aircraft, serial numbers 22-1 through 22-2699, the following inspection and rework is necessary. Remove and/or open panels as above. Remove and discard any sound- proofing material contaminated with engine or hydraulic oil or any sound-proofing which has the plastic septum separated from the fiberglas or showing signs of drying or cracking. Replacement of a discarded blanket may be made with equivalent fiberglas. Inspect for chafing of wire insulation and replace any inferior electrical wiring. Check for reasonable clearance between hydraulic lines, electrical wires, control cables and fuel lines and provide -clearance if necessary. 2. On PA-22 aircraft, serial numbers 22-2700 to 22-6194 inclusive, the procedure as outlined in (1) above should be followed within the next 100 hours of operation. Where inspection indicates a satisfactory condition exists, no rework or replacement is necessary. 3. Upon completion of the above, apply a sufficient quantity of B. F. Goodrich non- hardening putty No. 21 or other acceptable aircraft materials between firewall and fuselage cowl blanket to assure an airtight seal when reassembling the opened and removed panels. Non -hardening sealing material is available through your distributor or local aviation supply house. - 2 - Service Bulletin No. 161A 4. The sealing of the firewall on all affected aircraft must be inspected at each subsequent 100 hour interval and when found deficient, the foregoing procedure muHt be accomplished. 5. We would like to point out that, in the interest of safety and proper maintenance. a visual daily line inspection of the exhaust stack gaskets, exh;!Ust stack muffler assembly and muffler tail pipe joints be made to assure tightness; also that all fire- wall seals are in a satisfactory condition and the engine compartment is free of excessive oil or other combustible materials. 6. The 100 hour inspection requirement on all model PA-22 aircraft, serial numbers 22-1 to 22-6194 inclusive, can be eliminated If Piper kit, part number 754 237, is Installed. This kit Is available through your Piper distributor at $5.00 each. End. SERVICE BULLETIN NO. 161A PA-20 CHECK BELOW DOTTED LINE PA-22 PA-16