The bulletin
Text extracted from the PDF.
FAA Aviation Safety
SPECIAL AIRWORTHINESS
INFORMATION BULLETIN SUBJ: Engine Fuel and Control, Engine Fuel Filter SAIB: NE-17-27 Date: September 9, 2017 This is information only. Recommendations aren’t mandatory.
Introduction
This Special Airworthiness Information Bulletin (SAIB) alerts owners, operators, and certificated repair facilities of a quality escape of Wencor parts manufacturer approval (PMA) main engine fuel filters, part number (P/N) 5905587WE, used on the Pratt and Whitney Canada Corporation (PWC) engines listed in Table 1. The engines listed in Table 1 are all multi-engine aircraft.
At this time, the airworthiness concern is not an unsafe condition that would warrant an Airworthiness Directive (AD) action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.
Background
During a visual check prior to installation an operator noted excess blue epoxy used in the construction of Wencor fuel filters on the downstream side of the fuel filter’s filter media. One quarter of the 36 filters Wencor had in stock had this issue. The concern is the effects on fuel flow to the engine if this epoxy were to liberate. To date, there have been no in service events nor reports of epoxy liberation.
Recommendation
The FAA recommends that all owners and operators of the PWC engines listed in Table 1, with Wencor PMA fuel filters, P/N 5905587WE, installed, or in stock, implement the actions outlined in the Wencor Service Bulletin 160330-5905587WE, Rev A, or later versions.
TABLE 1 PWC Series Engines Next Higher Assembly (NHA) P/Ns NHA Description Air Transport Association (ATA) PW118, PW119, PW120, PW121, PW123, PW124, PW125, PW126, PW127 5006488, 5008269, 5009980, 5009982, 5009984, 5009986 Power driven rotary fuel pump 73-10-09, 73-10-07
For Further Information Contact
Matthew Bryant, Aerospace Engineer; Denver ACO, East 68th Avenue, Room 214, Denver, Colorado 80249; phone 303-342-1092; fax 303-342-1088; email: Matthew.Bryant@faa.gov.
2 For Related Service Information Contact
Jon Bies, Wencor Group, 1625 N 1100 W, Springville, UT 84663; email: jbies@wencor.com; phone:
801-491-2543; Website: https://www.wencor.com