Air carrier X failed to change frequency to OM and landed without clearance. Pilot deviation.

Attributes
ACN	294044
Time
Date	199501
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sea
State Reference	WA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sea tower : sea
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	294044
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X given multiple instructions by approach control to intercept ILS runway 16R at seattle. Included was heading, altitude, cleared to intercept and to speed instructions 210 KTS from mgnum to anvil and 170 KTS from anvil to parkk. This required multiple xmissions to confirm. I don't recall being given the instruction to switch to tower. After parkk we slowed, configured for landing, completed checklist and landed. After rollout and clearing the runway 16R and holding short of runway 16L we realized we had not switched to tower and had landed without clearance. Tower controller gave us clearance though we did not respond and kept us safe. Suggest clear procedures for switching to tower on approach. As every airport is different, perhaps a standardized procedure could be established. Also, frequently, approach control will issue as many as 5 specific commands in 1 transmission while we pilots are trying to turn, level, slow and set our instruments (ie, high workload times). This entire process could be simplified and standardized.

Original NASA ASRS Text

Title: ACR X FAILED TO CHANGE FREQ TO OM AND LANDED WITHOUT CLRNC. PLTDEV.

Narrative: ACR X GIVEN MULTIPLE INSTRUCTIONS BY APCH CTL TO INTERCEPT ILS RWY 16R AT SEATTLE. INCLUDED WAS HDG, ALT, CLRED TO INTERCEPT AND TO SPD INSTRUCTIONS 210 KTS FROM MGNUM TO ANVIL AND 170 KTS FROM ANVIL TO PARKK. THIS REQUIRED MULTIPLE XMISSIONS TO CONFIRM. I DON'T RECALL BEING GIVEN THE INSTRUCTION TO SWITCH TO TWR. AFTER PARKK WE SLOWED, CONFIGURED FOR LNDG, COMPLETED CHKLIST AND LANDED. AFTER ROLLOUT AND CLRING THE RWY 16R AND HOLDING SHORT OF RWY 16L WE REALIZED WE HAD NOT SWITCHED TO TWR AND HAD LANDED WITHOUT CLRNC. TWR CTLR GAVE US CLRNC THOUGH WE DID NOT RESPOND AND KEPT US SAFE. SUGGEST CLR PROCS FOR SWITCHING TO TWR ON APCH. AS EVERY ARPT IS DIFFERENT, PERHAPS A STANDARDIZED PROC COULD BE ESTABLISHED. ALSO, FREQUENTLY, APCH CTL WILL ISSUE AS MANY AS 5 SPECIFIC COMMANDS IN 1 XMISSION WHILE WE PLTS ARE TRYING TO TURN, LEVEL, SLOW AND SET OUR INSTS (IE, HIGH WORKLOAD TIMES). THIS ENTIRE PROCESS COULD BE SIMPLIFIED AND STANDARDIZED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.