A Fokker F.28 Mk.100 (Fokker 100) was operating a domestic scheduled passenger flight between the Brazilian cities of São Paulo and Campo Grande. After an uneventful take-off at 09.48 lt (local time), the crew and passengers settled in for the cruise section of the 905-kilometres (565 miles) flight. On board the aircraft, a crew of 5 (two pilots and 3 cabin attendants) and 24 passengers.
The aircraft in its final position, shortly after the forced landing (source; baaa-acro. com © Unknown)
After less than an hour into the flight, while in the cruise phase of the flight at Flight Level 350, the crew was alerted by two messages on the Multi-Function Display Unit;
Fuel Filter Blocked Status Message for the righthand engine
Fuel Pressure low Warning Message for the righthand engine
The crew consulted and completed the necessary checklist, a short while late they saw themself confronted with an ever-increasing fuel imbalance. ATC was contacted, an emergency was declared reporting a fuel transfer issue and requested a diversion to Londrina. How ever due to weather conditions at Londrina it was decide to divert to Araçatuba Airport. ATC cleared the aircraft to Araçatuba Airport and was vectored towards the airport. Approximately 27 nm from the airport ATC transferred them to the Araçatuba Airport ATC.
Close IP of the left wing tip, apparently where it hit the cow
(source; baaa-acro. com © Unknown)
At ~5000 feet they broke through the clouds and entered VFR conditions. At an altitude of 3000 feet, approximately 18 miles from the airport, The right-hand engine flamed out, shortly afterwards followed by a flame out of the left-hand engine. Altitude at the time was 3000 feet with an indicated airspeed of ~200 knots. Realising they would not be able to reach the airport the crew configured the aircraft for a forced landing, flaps and landing gear were lowered afterwards maintaining a speed of 120 knots. A field, 16 nm south of the airfield in the town of Birgui became the landing site. Upon touchdown, the landing gear was ripped from the aircraft and it slid on its belly for a short while before coming to a stop. The cabin crew evacuated the passengers, followed by the flight crew after completing the necessary emergency checklists. Four of the passengers received minor injuries, one cow was killed when it was hit by the aircraft. The aircraft was damaged beyond repair.
The aircraft in its final position, shortly after the forced landing. Note crew and passengers adjacent to the aircraft (source; baaa-acro. com © Unknown)
An investigation was launched by the Sistema de Investigação e Prevenção de Acidentes Aeronáuticos (SIPAER), the Brasilian Aviation Safety Board. The investigation determined that both engines stopped following the rupture of a fuel line connected to the right engine, causing a major fuel leak. The disconnection of the fuel line was the consequence of the rupture of an aluminium ring.
Several safety recommendations are made in the investigation report published by the SIPAER. The SIPAER report (only available in Portuguese) is available for the readers' reference by clicking on the .pdf file below;
** Editorial note **
V2 Aviation - Training & Maintenance has not been able to obtain an investigation report in English on this accident. This blog is therefore based on several internet sources. Should there be inconsistencies in the blog don't hesitate to get in touch with us. There are two possibilities to do that, via the comments function at the bottom of this page or via the contact page of the website.