Peace E145 at Kaduna on Jan 14th 2021, rejected takeoff due to hydraulic problems
Last Update: April 20, 2021 / 18:36:02 GMT/Zulu time
Nigeria's Accident Investigation Bureau (NAIB) stated in their preliminary report the first officer (23, CPL, 1,116 hours total, 960 hours on type) was pilot flying, the captain (64, ATPL, 14,210 hours total, 1,200 hours on type) was pilot monitoring on both the inbound and departing flight.
The NAIB reported during the inbound flight P4-7376, also with the FO being pilot flying, the crew observed a #1 hydraulic system low quantity indication during climb out of Lagos. The crew worked the quick reference handbook procedures which advised the monitor the hydraulic system. With the crew monitoring the #1 hydraulic system the aircraft continued to Kaduna for a safe landing on runway 05. When the aircraft turned off the runway the nose wheel steering felt stiff. The crew turned the electric motor driven pump for the #1 hydraulic system (EMDP 1) on, after which the nose wheel steering became more effective.
Both pilots performed a walk around especially looking out for spillages, none was detected. The crew thus decided to perform the return flight and turned the EMDP 1 on as a precaution. During taxi cabin crew heard hissing sounds from about the wings area to the aft cabin, the flight crew acknowledged the information. The NAIB wrote:
The flight crew stated that during the take-off roll, as the aircraft attained 110 KIAS, the crew experienced heavy vibrations and shaking of the control column. The Pilot (PM) then took over control of the aircraft and performed a rejected take-off by applying foot brakes and thrust reversers to bring the aircraft to a stop. The Number 1 Thrust Reverser did not deploy. The aircraft came to a stop 284 metres short of the end of runway 05 and four metres left of the centreline. At 12:11 h, ATC informed the Aerodrome Rescue and Fire Fighting Services (ARFFS).
According to the CVR recordings, the ARFFS arrived 4 minutes 11 seconds after they were informed by the ATC. Upon arrival, the ARFFS conducted inspection on the aircraft, after which it found the number 1 and number 2 main wheel tyres burst and reported same to the flight crew. The Pilot briefed the passengers of the situation via the Public Address (PA) system, thereafter passengers disembarked normally.
The incident occurred at 12:11 h daytime in Visual Meteorological Conditions (VMC).
The NAIB reported the aircraft had been serviced the night before, both hydraulic systems had been refilled.
A post flight inspection revealed y hydraulic fluid spillage was observed at the left main gear. A hydraulic brake hose coupling underneath the #1 main landing gear was found loose and dripping hydraulic fluid intermittently. Upon tightening the connecting pipe the leakage stopped. In addition the electrical connector for the pressure switch from the #1 engine driven pump was found loose. The connector was tightened, tested and the system delivered 3000psi hydraulic pressure again.
The NAIB reported:
During the take-off roll, at about 756 m from the threshold of RWY 05, the number 2 main wheel tyre (inboard left main wheel) burst and the aircraft continued for a distance of about 1300 m when the number 1 left main wheel tyre (outboard left main wheel) burst. The aircraft continued for another 200 m where runway to metal contact started. The aircraft thereafter, moved in a ground loop pattern for 460 m.
The aircraft stopped at a distance of 1960 m from the point of first tyre burst, 284 m to the end of runway 05 on a magnetic heading of 031°, four meters left of the runway centreline with the aircraft rested on the left main landing gear hubs.
This article is published under license from Avherald.com. © of text by Avherald.com.
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