Controlled Flight Into Terrain: DANA Air MD-83, 5N-RAM, Iju-Ishaga, 3rd June 2012

First Interim Statement

  • Report No
    DANA/2012/06/03/INTR/01
  • Reg. No
    5N-RAM
  • Operator
    DANA Airlines Nigeria Limited
  • Aircraft Type
    MD-83
  • Occurence
    Accident
  • Report Date
    Monday, June 3, 2013

 

On 3rd June 2012 about 1545 hours, 5N-RAM, a Boeing MD-83, a domestic scheduled commercial flight, operated by Dana Airlines Limited as flight 992 (DAN 992), crashed into a densely populated area during a forced landing following a total loss of power in both engines while on approach to Murtala Muhammed Airport (LOS), Lagos, Nigeria. Visual meteorological conditions prevailed at the time and the airplane was on an instrument flight plan. All of the 153 persons aboard the airplane, including the 6 crew members were fatally injured. There were 10 confirmed ground fatalities. The airplane was destroyed. There was post impact fire. The flight originated at Abuja (ABV) and the destination was LOS.

The airplane was on the fourth flight segment of the day, consisting of two round-trips between Lagos and Abuja.

The accident occurred during the return leg of the second trip. DAN 992 was on final approach for runway 18R at LOS when the crew reported the total loss of power. According to interviews, the flight arrived in ABV as Dana Air flight 993 about 1350. According to Dana Air ground personnel, routine turn-around activities occurred, including refueling of the airplane. DAN 992 initiated engine startup at 1436, taxied to the runway and was later airborne at 1458 after the flight had reported that it had a fuel endurance of 3.5 hours. Shortly after takeoff, DAN 0992 reported 1545 as the estimated time of arrival at LOS  as the flight climbed to a cruise altitude of 26,000 ft.

DAN992 made contact with Lagos Area Control Center at 1518 hours. The cockpit voice recorder (CVR) retained about 31 minutes of the flight and starts about 1515 at which time
the captain and first officer were in a discussion of a non-normal condition regarding the correlation between the engine throttle setting and an engine power indication.

However, they did not voice concerns then that the condition would affect the continuation of the flight. The flight crew continued to monitor the condition and became increasingly concerned as the flight transition through the initial descent from cruise altitude at 1522 and the subsequent approach phase. DAN 992 reported passing through 18,100 and 7,700 ft, respectively, at 1530 and 1540 hours. After receiving a series of heading and altitude assignments from the controller, DAN 992 was issued the final heading to intercept the final approach course for runway 18R.

During the period of 1537 and 15:41 the flight crew engaged in pre-landing tasks including deployment of the slats, and extension of the flaps and landing gear. At 15:41:16 the first officer (FO) inquired, "both engines coming up?" and the captain (Capt) replied “negative.”

The flight crew subsequently discussed and agreed to declare an emergency. At 1542:10, DANA 992 radioed an emergency distress call indicating "dual engine failure . . . negative response from throttle." At 1542:35, the flight crew lowered the flaps further and continued with the approach and discussed landing alternatively on runway 18L. At 1542:45, the Capt
reported the runway in sight and instructed the FO to raise the flaps up and 4 seconds later to raise the landing gear.

At 1543:27 hours, the Capt informed the FO "we just lost everything, we lost an engine. I lost both engines". During the next 25 seconds until the end of the CVR recording, the flight crew was attempting to restart the engines.

The airplane crashed in a residential area about 5.8 miles north of LOS. The airplane wreckage was on approximately the extended centerline of runway 18R.

During the impact sequence, the airplane struck an incomplete building, two trees and three buildings. The wreckage was confined, with the separated tail section and engines located at the beginning of the debris field.

The airplane was mostly consumed by post crash fire. The tail section, both engines and portions of both wings, representing only about 15% of the airplane were recovered from the accident site for further examination.

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