WPR09LA255

NTSB accident investigation · Embraer EMB-135 · Los Angeles, CA · May 21, 2009

Accident · No injuriesLimited investigationFinal report
Date
May 21, 2009, 16:25 local (23:25 UTC)
Place
Los Angeles, CA
Injuries
47 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N843AEEmbraer EMB-135
Defining event
Taxi-to runway: Ground collision
Weather
Visual (VMC) · Day
Status
Completed · report April 28, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
ALPA, Federal Aviation Administration
FAA report
20090521007209A
Case key
73886

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The NTSB’s determination of the probable cause, and any contributing factors.

The flight crew's failure to adequately monitor and maintain clearance from a parked aircraft while taxiing. Contributing to the accident was an improperly parked airplane that encroached upon the taxiway area.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings.

Analysis

Following push back from the gate, as the captain was taxiing the airplane from the ramp to the runway, the left horizontal stabilizer struck the right horizontal stabilizer of a parked company airplane at an adjacent gate, resulting in substantial damage to both airplanes' flight control surfaces. According to the flight crew statements and a Federal Aviation Administration (FAA) inspector who responded to the accident site, the parked airplane had been improperly parked with the right wing tip and horizontal stabilizer well outside the safety lines.

Factual narrative

The factual narrative575 words

On May 21, 2009, about 1625 Pacific daylight time, an Embraer EMB-135KL, N843AE, taxied into a parked and unoccupied Embraer EMB-135KL, N848AE, while leaving the terminal hub at Los Angeles International Airport (LAX), Los Angeles, California. American Eagle operated the airplane under 14 Code of Federal Regulations Part 121 as flight 3085. The captain, first officer, 1 flight attendant, and 44 passengers were not injured. The accident airplane received substantial damage to the left horizontal stabilizer, and the parked airplane received substantial damage to the right horizontal stabilizer. The other Embraer was parked at the gate with no flight crew or passengers onboard. There were no ground injuries. Visual meteorological conditions prevailed for the flight and an instrument flight rules flight plan had been filed. The flight was destined for San Diego International Airport (SAN), San Diego, California. In the company's submitted report (National Transportation Safety Board (NTSB) Pilot/Operator Aircraft Accident/Incident Report form 6120.1), American Eagle reported that ramp personnel pushed airplane back and instructed the captain to set the parking brake. After setting the parking brake, the tug was disconnected. The first officer contacted LAX ground control and was given a taxi clearance. As the captain started to taxi the airplane, along the taxiway center line, the flight crew felt a "bump." The captain stopped the airplane. The captain set the parking brake and shutdown the engines. Ramp personnel radioed the flight crew stating that their left horizontal stabilizer had struck the right horizontal stabilizer of an airplane parked at the gate. According to a Federal Aviation Administration (FAA) inspector who responded to the accident, the airplane had been pushed back from the gate via ground tow. Once disconnected from the tow bar, the captain started to taxi the airplane to the runway. As the captain was maneuvering around a parked airplane, the left horizontal stabilizer of the taxiing airplane struck the right horizontal stabilizer of the parked airplane. The FAA inspector further reported that the parked airplane had been improperly parked with the right wing tip and horizontal stabilizer well outside the safety lines. It also appeared that the taxiing airplane may have been pushed back in such a manner that the left main landing gear was to the left of the taxi line placing it closer to the parked airplane. Both the solid state flight data recorder (SSFDR), and solid state cockpit voice recorder (SSCVR) for the accident airplane were shipped to the NTSB vehicle recorder laboratory, Washington, D.C., for read out. The SSFDR was a Honeywell SSFDR, model 980-4700, 256 word, serial number 09297. The SSFDR was received at the vehicle recorder division in good condition, and a normal extraction of the data was performed. An FDR group was not convened; the event was recorded on the SSFDR, with no pertinent findings. The SSCVR was aHoneywell 6022 SSCVR 120, serial number 5550. The SSCVR was received at the vehicle recorder division's audio laboratory in good condition, and the data was extracted normally. A CVR group was not convened; the event was recorded on the SSCVR; however, the information did not add anything to the investigation. As a result of the ground collision, American Eagle had the lead-in lines redrawn to a 45-degree angle. If the flight crew was not able to make the drop off point to the lead-in lines for parking, they would have to taxi the airplane around the building or satellite terminal and rejoin the drop off point.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident.

Aircraft

Registration
N843AE
Reported as
Embraer EMB-135 (KL)
Category
Airplane
Serial number
145680
Airframe hours
15,852
Damage
Substantial damage
Flight
Part 121
Operator
American Eagle Airlines Inc
Registered owner
American Eagle Airlines Inc
Airworthiness certificate
Standard, Transport
Departed
LAX · Los Angeles, CA
Destination
SAN · San Diego, CA
Flight plan
IFR
Airport
LAX · Los Angeles Int'l Airport

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
50
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 1, With waivers/limitations
Seat
Left
Flight hours
15,000 total · 8,600 in this make and model
Role
Co-pilot
Age
24
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Seat
Right
Flight hours
2,823 total · 800 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 13 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 55 °F
Altimeter
29.93 inHg
Observed at
LAX

Docket · 8

The files NTSB released with the investigation on January 21, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.9 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.