SAIB CE-04-72R1 —

SAIB CE-04-72R1 Current Issued 08/18/2004 Cessna Aircraft Company, The 150 | 172 | 177 | 180 | 182 | 185 | 188 | 206 | 207 | 210

What is a SAIB?

A Special Airworthiness Information Bulletin is an FAA-issued advisory — not mandatory like an AD, but worth knowing about. SAIBs typically flag service bulletins, manufacturer recommendations, or emerging issues that don't (yet) rise to AD level.

Bulletin text

Verbatim from the FAA-published PDF. 11 paragraphs · 301 words.

CE-04-72R1 August 18, 2004 www.faa.gov/certification/aircraft This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin informs you, registered owners and operators of Cessna Aircraft Company models 150, 172, 177, 180, 182, 185, 188, 206, 207, 210 series airplanes (equipped with a VR600A voltage regulator (VR)), that Cessna has issued Owner Advisory SEB03- 3A and Service Bulletin SEB03-3 regarding voltage regulator replacement.

Background

Cessna received reports of undetected over-voltage conditions caused by internal failure of the VR installed in a Cessna Model 172N airplane. The airplane had a replacement VR installed, part number (P/N) VR600A, which Electrosystems, Inc., manufactured as an FAA-approved parts manufacturer approval (PMA). The VR is a replacement for Cessna P/N C6611001-0201 and is eligible for installation on Cessna airplanes equipped with a 14-volt system.

Installation instructions of the VR600A VR specify to remove the Cessna-installed over-voltage sensor and to modify the aircraft wiring. The VR600A drawing, dated 6/11/97, specifies that the VR600A is a solid-state VR containing internal over-voltage protection. After installation of a VR600A, the regulator is the only over-voltage protection on the airplane. If the regulator fails, the airplane electrical system is no longer protected.

Cessna’s Owners Advisory and Service Bulletin recommends compliance within 12 months or 100 hours, whichever occurs first. Cessna Service Kit SK210-170 is available and replaces voltage regulator P/N VR600A with Electrosystems VR600 voltage regulator. The Service Kit also specifies the reinstallation of the over-voltage sensor, and if the airplane wiring had been modified to install the VR600A voltage regulator, the return of the wiring to the original manufacturer’s configuration.

Recommendation

We recommend that you consider incorporating the Owners Advisory and Service Bulletin.

For Further Information Contact

Roger Souter, Aerospace Engineer, FAA Wichita Aircraft Certification Office, 1801 Airport Rd, Rm 100, Wichita, KS 67209; phone: (316) 946-4134; email: [email protected]

The FAA-published PDF is the authoritative source. Open on drs.faa.gov ↗