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| Date: | Tuesday 27 May 2008 |
| Time: | |
| Type: |  Boeing 737-301F |
| Owner/operator: | Flyant Cargo, opf Agroar |
| Registration: | EC-KDJ |
| MSN: | 23743/1510 |
| Year of manufacture: | 1988 |
| Engine model: | CFMI CFM56-3 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Other fatalities: | 0 |
| Aircraft damage: | Minor, repaired |
| Category: | Incident |
| Location: | Funchal-Madeira Airport (FNC/LPMA) -
 Portugal
|
| Phase: | Take off |
| Nature: | Cargo |
| Departure airport: | Funchal-Madeira Airport (FNC/LPMA) |
| Lisboa-Humberto Delgado Airport (LIS/LPPT) | |
| Investigating agency: | GPIAA |
| Confidence Rating: |  Accident investigation report completed and information captured |
After a heavy shower, with a light rain still falling, the aircraft started taxing towards the runway 05 Take-Off position at Madeira Airport. After backtracking on runway and 180º turn on reversion pad, the aircraft lined up on threshold and, as soon as clearance was issued, the pilot advanced thrust levers, let power stabilize at 55% N1 and selected “TO/GA” on Autothrottle.
The aircraft started moving forward, but engines didn’t react symmetrically (left engine accelerating more then right one), the aircraft skidding to the right, becoming impossible for the pilot to get control, with normal means, until reaching runway safety shoulder, after power reduction and A/T was disconnected by the pilot flying.
When leaving runway, the external left main wheel hit a runway edge light and broke it. After regaining control of the aircraft, the pilot came back to runway centreline and taxied to the ramp, exiting via taxiway “C”.
Feeling that aircraft was performing well, the captain decided to proceed the flight, reversed taxi, entered runway and lined up for take-off.
At this stage he noticed the broken runway light, in the same area the aircraft left the runway and, wondering if the light has been broken by the aircraft and if it suffered any damage, he returned to the ramp for investigation.
An external inspection revealed a scratch on outboard left main wheel tire and that wheel was changed before new departure was attempted.
Primary Cause
Primary cause for this incident was the asymmetrical activity of Autothrottle system, which caused engine #1 power increase greater than engine #2, forcing the aircraft to veer to the right.
Contributory Factors
The following were considered as Contributory factors:
1 st The presence of a light water film on runway, due recent rain;
2 nd The presence of dust particles on the runway;
3 rd The aircraft being on the painting marks of runway threshold;
4 th The absence of grooving on that part of runway surface, with poor macrotexture;
Rain water, combined with dust, formed a thin mud film on top of a smooth runway, in order to create a highly slippery surface. When asymmetrical engine power forced the aircraft to veer to the right, it started skidding, entering in a viscous hydroplaning situation.
Without grooving to stop the hydroplaning phenomenon, the aircraft continued skidding until reaching runway safety shoulder, which was not so smooth, where tires got contact with surface and control was regained.
Accident investigation:
 |
|
Sources:
GPIAAF
History of this aircraft
Other occurrences involving this aircraft
| 3 April 2017 | PK-YGG | Tri-MG Intra Asia Airlines | 0 | Wamena Airport (WMX/WAJW) |  |
min |
| 18 July 2017 | PK-YGG | Tri-MG Intra Asia Airlines | 0 | Wamena Airport (WMX) | |
w/o |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Apr-2025 09:56 | ASN | Added |
| 01-May-2025 15:41 | ASN | Updated [Aircraft type, Cn, Operator, Total occupants, Location, Phase, Nature, Departure airport, Destination airport, Damage, Narrative, Category, ] |
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