DCA17LA145

NTSB accident investigation · Airbus A321 · Atlanta, GA · June 23, 2017

Accident · No injuriesClass 3 · LimitedFinal report
Date
June 23, 2017, 13:38 local (17:38 UTC)
Place
Atlanta, GA
Injuries
199 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N315DNAirbus A321
Defining event
Landing-flare/touchdown: Tailstrike
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Major Investigations Division
Case key
95431

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 first officer's improper landing flare, which resulted in a hard, bounced landing, and the flight crew’s improper bounced landing recovery procedures.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Use of equip/info: aircraft controlPersonnel issues › Task performance · CopilotAirbus A321-213: 1 caseAll aircraft: 9,295 casesProbable cause
Action: incorrect action sequencePersonnel issues › Action/decision · Flight crewAirbus A321-213: 1 caseAll aircraft: 77 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The first officer was on her third day of initial operating experience training and was the pilot flying for the flight; the captain, a check airman, was the pilot monitoring. The first officer reported that this was her fourth landing in an A320-series airplane and her first landing in an A321 model. According to the captain and first officer, the flight was cleared for the visual approach, the approach was stable, and wind was out of the southwest at 12 kts with gusts up to 20 kts. The first officer recalled that the captain instructed her to "pull back pull back" before touchdown. Both pilots reported that the landing was “firm.” The first officer stated that after landing, the captain provided feedback that she flared a little low (near 20 ft above ground level [agl] instead of 30 ft agl) and did not provide enough pitch back on the side stick. Both crewmembers reported that the first officer was late to flare on previous landings. A company pilot who was seated in the cockpit jumpseat reported the captain was providing instruction to the first officer during the flight about the nuances of the A321. He stated that the descent and arrival were uneventful up until the flare and that the first officer “never really performed any type of flare maneuver even as the captain repeatedly called for the F/O to perform one." Subsequent preflight inspection of the airplane by the next flight crew revealed an area of abrasion damage to the aft fuselage about 13 ft long by 2 ft wide affecting two skin panels. The fuselage skin was abraded through in several areas with damage to the underlying stringers and frames. Several frames, stringers, and shear clips were also bent and/or fractured.

Factual narrative

On June 23, 2017, about 1338 eastern daylight time, Delta Air Lines flight 800, an Airbus A321-211, N315DN, experienced a tail strike during landing on runway 26R at Hartsfield-Jackson Atlanta International Airport (ATL), Atlanta, Georgia. There were no injuries to the 199 passengers and crew onboard, and the airplane sustained substantial damage. The scheduled domestic passenger flight was operated under Title 14 Code of Federal Regulations (CFR) Part 121 from General Edward Lawrence Logan International Airport (BOS), Boston, Massachusetts, to ATL. Visual meteorological conditions prevailed at the time of the landing. Review of flight data recorder data showed that the airplane descended below 2,000 ft agl at 1335:55; the autopilot was not engaged, and the autothrottle was engaged. At 1337:58, the airplane's pitch began increasing from 2° airplane nose up. At 1338:03, the flare law mode activated. At 1338:04.2, the cockpit voice recorder recorded the automated alert "TWENTY" as the airplane passed through 20 ft agl. The captain instructed the first officer to bring the nose up three times between this alert and runway contact. At 1338:06, the autothrottle disengaged. At 1338:07, both main landing gear weight on wheels (WOW) switches transitioned from air to ground. At that time, the airspeed was about 130 kts, the pitch was about 6.2° airplane nose up, the wings were level, and the airplane experienced its greatest vertical acceleration of 1.89 g. About 1 second later, the spoilers deployed, and the main landing gear WOW switches transitioned to air. The cockpit voice recorder recorded an automated alert of "PITCH PITCH" at 1338:08.6, followed by the captain instructing the first officer to lower the nose. At 1338:09, the main landing gear WOW switches transitioned back to ground and stayed in that state. About the time of the second WOW ground indication, the maximum pitch of 9.7° airplane nose up and a vertical acceleration of 1.65 g were recorded. The cockpit voice recorder recorded an automated alert of "DUAL INPUT" at 1338:10. The flight data recorder showed longitudinal and lateral control stick inputs on the captain's stick for about 3 seconds beginning about 1338:07.5. The nose landing gear WOW status transitioned to ground at 1338:12, and the airplane decelerated using brakes, spoilers, and thrust reversers.

Aircraft

Registration
N315DN
Reported as
Airbus A321 (211)
Category
Airplane
Serial number
7436
Built
2016
Airframe hours
1,458.25
Engines
CFM Intl CFM56-5B3/3, turbo fanCFM Intl CFM56-5B3/3, 32,000 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 121
Operator
Delta Air Lines, Inc.
Registered owner
Wells Fargo Bank Northwest Na Trustee
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · June 22, 2017
Departed
BOS · Boston, MA
Destination
ATL · Atlanta, GA
Flight plan
IFR
Airport
ATL · Hartsfield - Jackson Atlanta I, runway 26R, 9,000 × 150 ft, concrete
Equipment
Angle of attack indicator, Electronic flight bag or handheld device, Stall warning system, Data recorder, Auto-pilot, Electronic multifunction display, Electronic primary flight display, Satellite tracking device, Onboard weather

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
62
Injuries
None
Certificates
Flight engineer, Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
April 23, 2017
Seat
Left
Restraint
5-point
Flight hours
11,983 total · 5,206 in this make and model · 1,795 as pilot in command · 184 in the last 90 days · 2 in the last 24 hours
Role
Co-pilot
Age
29
Injuries
None
Certificates
Airline transport, Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
June 17, 2017
Seat
Right
Restraint
5-point
Flight hours
5,564 total · 12 in this make and model · 0 as pilot in command · 98 in the last 90 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 19 knots, gusting 24
Visibility
10 statute miles
Lowest ceiling
25,000 ft broken
Temperature
84 °F, dew point 70 °F
Altimeter
29.99 inHg
Observed at
KATL, 2 nm away

Docket · 18

The files NTSB released with the investigation on July 13, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 180 MB in all.

Weather studyItem 1 · PDF · 8 pages · 710 KBAttachment 1 to the weather studyItem 2 · PDF · 15 pages · 93 KBFlight data recorder - specialist's factual reportItem 3 · PDF · 10 pages · 2.3 MBFlight data recorder - specialist's factual report attachment 1 - tabular dataItem 4 · CSV · 139 MBOperational factors group chairman factual reportItem 5 · PDF · 40 pages · 2.0 MBOperational factors group - attachment 1 - flight crew interview summaries and written summariesItem 6 · PDF · 14 pages · 189 KBOperational factors group - attachment 2 - jumpseat pilot written statementItem 7 · PDF · 2 pages · 81 KBOperational factors group - ATTACHMENT3 - flight crew training and recent flight recordsItem 8 · PDF · 23 pages · 509 KBOperational factors group - attachment 4 - operations manual - limitationItem 9 · PDF · 4 pages · 93 KBOperational factors group - attachment 5 - operations manual - A321 differencesItem 10 · PDF · 6 pages · 246 KBOperational factors group - attachment 6 - A320 topics of consideration - A321 differencesItem 11 · PDF · 4 pages · 818 KBOperational factors group - attachment 7 - amplified checklistItem 12 · PDF · 9 pages · 169 KBOperational factors group - attachment 8 - delta air lines operating experience guideItem 13 · PDF · 10 pages · 568 KBOperational factors group - attachment 9 - approach briefingItem 14 · PDF · 4 pages · 212 KBOperational factors group - attachment 10 - flight crew training manual - flare and touchdownItem 15 · PDF · 8 pages · 265 KBOperational factors group - attachment 11 - Airbus material - avoiding tail strikeItem 16 · PDF · 27 pages · 1.6 MBOperational factors group - attachment 12 - operational factors group party formItem 17 · PDF · 16 pages · 310 KBPilot/operator aircraft accident report, NTSB form 6120.1Item 18 · PDF · 9 pages · 30.1 MB