DCA99MA060

The full report (NTSB/AAR-01-02) is available on the NTSB Web site. See http://www.ntsb.gov/Publictn/publictn.htm for details.

On June 1, 1999, at 2350:44 central daylight time,1 American Airlines flight 1420, a McDonnell Douglas DC-9-82 (MD-82), N215AA, crashed after it overran the end of runway 4R during landing at Little Rock National Airport in Little Rock, Arkansas. Flight 1420 departed from Dallas/Fort Worth International Airport, Texas, about 2240 with 2 flight crewmembers, 4 flight attendants, and 139 passengers aboard and touched down in Little Rock at 2350:20. After departing the end of the runway, the airplane struck several tubes extending outward from the left edge of the instrument landing system (ILS) localizer array, located 411 feet beyond the end of the runway; passed through a chain link security fence and over a rock embankment to a flood plain, located approximately 15 feet below the runway elevation; and collided with the structure supporting the runway 22L approach lighting system. The captain and 10 passengers were killed; the first officer, the flight attendants, and 105 passengers received serious or minor injuries; and 24 passengers were not injured.2 The airplane was destroyed by impact forces and a postcrash fire. Flight 1420 was operating under the provisions of 14 Code of Federal Regulations (CFR) Part 121 on an instrument flight rules (IFR) flight plan.

The full report (NTSB/AAR-01-02) is available on the NTSB Web site. See http://www.ntsb.gov/Publictn/publictn.htm for details.

History of Flight

On June 1, 1999, about 2350:44 central daylight time, American Airlines flight 1420, a McDonnell Douglas DC-9-82 (MD-82), N215AA, crashed after it overran the end of runway 4R during landing at Little Rock National Airport in Little Rock, Arkansas. Flight 1420 departed from Dallas/Fort Worth International Airport, Texas, about 2240 with 2 flight crewmembers, 4 flight attendants, and 139 passengers aboard and touched down in Little Rock about 2350:20. After departing the end of the runway, the airplane struck several tubes extending outward from the left edge of the instrument landing system (ILS) localizer array, located 411 feet beyond the end of the runway; passed through a chain link security fence; went down a rock embankment to a flood plain, located approximately 15 feet below the runway elevation; and collided with the structure supporting the runway 22L approach lighting system. The captain and 10 passengers were killed; the first officer, the flight attendants, and 105 passengers received serious or minor injuries; and 24 passengers were not injured. The airplane was destroyed by impact forces and a postcrash fire. Flight 1420 was operating under the provisions of 14 Code of Federal Regulations (CFR) Part 121 on an instrument flight rules (IFR) flight plan.

Flight 1420 was the third and final leg of the first day of a 3-day sequence for the flight crew. The flight sequence began at O'Hare International Airport, Chicago, Illinois. According to American Airlines company records, the captain checked in for the flight at 1038, and the first officer checked in at 1018. Flight 1226, from Chicago to Salt Lake City International Airport, Utah, departed about 1143 and arrived about 1458 (1358 mountain daylight time). Flight 2080, from Salt Lake City to Dallas/Fort Worth, departed about 1647 (1547 mountain daylight time) and arrived about 2010, 39 minutes later than scheduled because of an airborne hold during the approach resulting from adverse weather in the airport area. The captain was the flying pilot for flight 1226, and the first officer was the flying pilot for flight 2080.

Flight 1420, from Dallas/Fort Worth to Little Rock, was scheduled to depart at 2028 and arrive at 2141. However, before its arrival at Dallas/Fort Worth, the flight crew received an aircraft communication addressing and reporting system (ACARS) message indicating a delayed departure time of 2100 for flight 1420. After deplaning from flight 2080, the flight crew proceeded to the departure gate for flight 1420. The flight crew then received trip paperwork for the flight, which included an American Airlines weather advisory for a widely scattered area of thunderstorms along the planned route and two National Weather Service (NWS) in-flight weather advisories for an area of severe thunderstorms along the planned route.

The airplane originally intended to be used for the flight was delayed in its arrival to Dallas/Fort Worth because of the adverse weather in the area. After 2100, the first officer notified gate agents that flight 1420 would need to depart by 2316 because of American's company duty time limitation. The first officer then telephoned the flight dispatcher to suggest that he get another airplane for the flight or cancel it. Afterward, the accident airplane, N215AA, was substituted for flight 1420. The flight's 2240 departure time was 2 hours 12 minutes later than the scheduled departure time. The captain was the flying pilot, and the first officer was the nonflying pilot.

About 2254, the flight dispatcher sent the flight crew an ACARS message indicating that the weather around Little Rock might be a factor during the arrival. The dispatcher suggested that the flight crew expedite the arrival to beat the thunderstorms if possible, and the flight crew acknowledged this message. The first officer indicated, in a postaccident interview, that "there was no discussion of delaying or diverting the landing" because of the weather. According to the predeparture trip paperwork, two alternate airports-Nashville International Airport, Tennessee, and Dallas/Fort Worth-were specified as options in case a diversion was needed.

Beginning about 2258, flight 1420 was handled by controllers from the Fort Worth Air Route Traffic Control Center (ARTCC). About 2304, the Fort Worth center broadcast NWS Convective SIGMET [significant meteorological information] weather advisory 15C for an area of severe thunderstorms that included the Little Rock airport area. The cockpit voice recorder (CVR) indicated that the flight crew had discussed the weather and the need to expedite the approach. About 2325:47, the captain stated, "we got to get over there quick." About 5 seconds later, the first officer said, "I don't like that that's lightning," to which the captain replied, "sure is." The CVR also indicated that the flight crew had the city of Little Rock and the airport area in sight by about 2326:59.

About 2327, the Fort Worth center cleared the flight to descend to 10,000 feet mean sea level (msl) and provided an altimeter setting of 29.86 inches of mercury (Hg). The flight was transferred about 2328 to the Memphis ARTCC, which provided the same altimeter setting.

According to the CVR, the flight crew contacted the Little Rock Air Traffic Control Tower (ATCT) about 2334:05. The controller advised the flight crew that a thunderstorm located northwest of the airport was moving through the area and that the wind was 280 degrees at 28 knots gusting to 44 knots. The first officer told the controller that he and the captain could see the lightning. The controller told the flight crew to expect an ILS approach to runway 22L. The first officer indicated in a postaccident interview that, during the descent into the terminal area, the weather appeared to be about 15 miles away from the airport and that he and the captain thought that there was "some time" to make the approach.

The CVR indicated that, between about 2336:04 and about 2336:13, the captain and first officer discussed American Airlines' crosswind limitation for landing. The captain indicated that 30 knots was the crosswind limitation but realized that he had provided the limitation for a dry runway. The captain then stated that the wet runway crosswind limitation was 20 knots, but the first officer stated that the limitation was 25 knots. In testimony at the Safety Board's public hearing on this accident, the first officer stated that neither he nor the captain checked the actual crosswind limitation in American's flight manual. The first officer testified that he had taken the manual out but that the captain had signaled him to put the manual away because the captain was confident that the crosswind limitation was 20 knots.

About 2339:00, the controller cleared the flight to descend to an altitude of 3,000 feet msl. The controller then asked the flight crew about the weather conditions along the runway 22L final approach course, stating his belief that the airplane's weather radar was "a lot better" than the weather radar depiction available in the tower. About 2339:12, the first officer stated, "okay, we can see the airport from here. We can barely make it out but we should be able to make [runway] two two that storm is moving this way like your radar says but it is a little bit farther off than you thought." The controller then offered flight 1420 a visual approach to the runway, but the first officer indicated, "at this point, we really can't make it out. We're gonna have to stay with you as long as possible."

About 2339:45, the controller notified flight 1420 of a windshear alert, reporting that the centerfield wind was 340 degreesat 10 knots, the north boundary wind was 330 degrees at 25 knots, and the northwest boundary wind was 010 d